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5123291 = 21124281
BaseRepresentation
bin10011100010110011011011
3100122021211112
4103202303123
52302421131
6301450535
761355465
oct23426333
910567745
105123291
11298a228
121870a4b
1310a4c44
14975135
156b302b
hex4e2cdb

5123291 has 4 divisors (see below), whose sum is σ = 5147784. Its totient is φ = 5098800.

The previous prime is 5123281. The next prime is 5123299. The reversal of 5123291 is 1923215.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-5123291 is a prime.

It is a super-2 number, since 2×51232912 = 52496221341362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5123299) 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 3 ways as a sum of consecutive naturals, for example, 11930 + ... + 12351.

It is an arithmetic number, because the mean of its divisors is an integer number (1286946).

Almost surely, 25123291 is an apocalyptic number.

5123291 is a deficient number, since it is larger than the sum of its proper divisors (24493).

5123291 is a wasteful number, since it uses less digits than its factorization.

5123291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24492.

The product of its digits is 540, while the sum is 23.

The square root of 5123291 is about 2263.4687981061. The cubic root of 5123291 is about 172.3916956503.

The spelling of 5123291 in words is "five million, one hundred twenty-three thousand, two hundred ninety-one".

Divisors: 1 211 24281 5123291