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5072121 = 3223107229
BaseRepresentation
bin10011010110010011111001
3100112200122100
4103112103321
52244301441
6300414013
761053345
oct23262371
910480570
105072121
11295483a
121847309
131087872
14960625
156a2cb6
hex4d64f9

5072121 has 24 divisors (see below), whose sum is σ = 7750080. Its totient is φ = 3190176.

The previous prime is 5072117. The next prime is 5072141. The reversal of 5072121 is 1212705.

It is not a de Polignac number, because 5072121 - 22 = 5072117 is a prime.

It is a super-2 number, since 2×50721212 = 51452822877282, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

5072121 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 5072094 and 5072103.

It is not an unprimeable number, because it can be changed into a prime (5072141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22035 + ... + 22263.

It is an arithmetic number, because the mean of its divisors is an integer number (322920).

Almost surely, 25072121 is an apocalyptic number.

It is an amenable number.

5072121 is a deficient number, since it is larger than the sum of its proper divisors (2677959).

5072121 is a wasteful number, since it uses less digits than its factorization.

5072121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365 (or 362 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 5072121 is about 2252.1369851765. The cubic root of 5072121 is about 171.8158408409.

Adding to 5072121 its reverse (1212705), we get a palindrome (6284826).

It can be divided in two parts, 507 and 2121, that added together give a triangular number (2628 = T72).

The spelling of 5072121 in words is "five million, seventy-two thousand, one hundred twenty-one".

Divisors: 1 3 9 23 69 107 207 229 321 687 963 2061 2461 5267 7383 15801 22149 24503 47403 73509 220527 563569 1690707 5072121