520904955 has 16 divisors (see below), whose sum is σ = 834140160. Its totient is φ = 277585248.

The previous prime is 520904947. The next prime is 520904963. The reversal of 520904955 is 559409025.

It is an interprime number because it is at equal distance from previous prime (520904947) and next prime (520904963).

It is not a de Polignac number, because 520904955 - 2³ = 520904947 is a prime.

It is a super-3 number, since 3×520904955³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5094 + ... + 32676.

It is an arithmetic number, because the mean of its divisors is an integer number (52133760).

Almost surely, 2^520904955 is an apocalyptic number.

520904955 is a deficient number, since it is larger than the sum of its proper divisors (313235205).

520904955 is a wasteful number, since it uses less digits than its factorization.

520904955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28850.

The product of its (nonzero) digits is 81000, while the sum is 39.

The square root of 520904955 is about 22823.3423275383. The cubic root of 520904955 is about 804.6113654591.

The spelling of 520904955 in words is "five hundred twenty million, nine hundred four thousand, nine hundred fifty-five".