520788157 has 8 divisors (see below), whose sum is σ = 553229600. Its totient is φ = 488849904.

The previous prime is 520788139. The next prime is 520788181. The reversal of 520788157 is 751887025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 520788157 - 2⁷ = 520788029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520788137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123663 + ... + 127804.

It is an arithmetic number, because the mean of its divisors is an integer number (69153700).

Almost surely, 2^520788157 is an apocalyptic number.

It is an amenable number.

520788157 is a deficient number, since it is larger than the sum of its proper divisors (32441443).

520788157 is a wasteful number, since it uses less digits than its factorization.

520788157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251595.

The product of its (nonzero) digits is 156800, while the sum is 43.

The square root of 520788157 is about 22820.7834440450. The cubic root of 520788157 is about 804.5512239546.

The spelling of 520788157 in words is "five hundred twenty million, seven hundred eighty-eight thousand, one hundred fifty-seven".