904540531 has 2 divisors, whose sum is σ = 904540532. Its totient is φ = 904540530.

The previous prime is 904540523. The next prime is 904540577. The reversal of 904540531 is 135045409.

It is a weak prime.

It is an emirp because it is prime and its reverse (135045409) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 904540531 - 2³ = 904540523 is a prime.

It is a super-2 number, since 2×904540531² = 1636387144443523922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 904540493 and 904540502.

It is not a weakly prime, because it can be changed into another prime (904540501) 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 as a sum of consecutive naturals, namely, 452270265 + 452270266.

It is an arithmetic number, because the mean of its divisors is an integer number (452270266).

Almost surely, 2^904540531 is an apocalyptic number.

904540531 is a deficient number, since it is larger than the sum of its proper divisors (1).

904540531 is an equidigital number, since it uses as much as digits as its factorization.

904540531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 904540531 is about 30075.5803102783. The cubic root of 904540531 is about 967.1103041893.

The spelling of 904540531 in words is "nine hundred four million, five hundred forty thousand, five hundred thirty-one".