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5072991 = 371121961
BaseRepresentation
bin10011010110100001011111
3100112201211120
4103112201133
52244313431
6300422023
761056030
oct23264137
910481746
105072991
112955460
121847913
131088091
14960a87
156a3196
hex4d685f

5072991 has 16 divisors (see below), whose sum is σ = 8433408. Its totient is φ = 2635200.

The previous prime is 5072983. The next prime is 5072993. The reversal of 5072991 is 1992705.

It is not a de Polignac number, because 5072991 - 23 = 5072983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5072993) 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 15 ways as a sum of consecutive naturals, for example, 10750 + ... + 11211.

It is an arithmetic number, because the mean of its divisors is an integer number (527088).

Almost surely, 25072991 is an apocalyptic number.

5072991 is a deficient number, since it is larger than the sum of its proper divisors (3360417).

5072991 is a wasteful number, since it uses less digits than its factorization.

5072991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21982.

The product of its (nonzero) digits is 5670, while the sum is 33.

The square root of 5072991 is about 2252.3301267798. The cubic root of 5072991 is about 171.8256639002.

The spelling of 5072991 in words is "five million, seventy-two thousand, nine hundred ninety-one".

Divisors: 1 3 7 11 21 33 77 231 21961 65883 153727 241571 461181 724713 1690997 5072991