904256531 has 16 divisors (see below), whose sum is σ = 968634240. Its totient is φ = 841674240.

The previous prime is 904256519. The next prime is 904256539. The reversal of 904256531 is 135652409.

It is a cyclic number.

It is not a de Polignac number, because 904256531 - 2¹⁸ = 903994387 is a prime.

It is a super-2 number, since 2×904256531² = 1635359747712307922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 904256491 and 904256500.

It is not an unprimeable number, because it can be changed into a prime (904256539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 302876 + ... + 305846.

It is an arithmetic number, because the mean of its divisors is an integer number (60539640).

Almost surely, 2^904256531 is an apocalyptic number.

904256531 is a deficient number, since it is larger than the sum of its proper divisors (64377709).

904256531 is a wasteful number, since it uses less digits than its factorization.

904256531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3266.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 904256531 is about 30070.8585012134. The cubic root of 904256531 is about 967.0090785515.

The spelling of 904256531 in words is "nine hundred four million, two hundred fifty-six thousand, five hundred thirty-one".