520542155 has 16 divisors (see below), whose sum is σ = 729077760. Its totient is φ = 349347552.

The previous prime is 520542137. The next prime is 520542161. The reversal of 520542155 is 551245025.

It is a cyclic number.

It is not a de Polignac number, because 520542155 - 2¹² = 520538059 is a prime.

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, 156575 + ... + 159864.

It is an arithmetic number, because the mean of its divisors is an integer number (45567360).

Almost surely, 2^520542155 is an apocalyptic number.

520542155 is a deficient number, since it is larger than the sum of its proper divisors (208535605).

520542155 is a wasteful number, since it uses less digits than its factorization.

520542155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316498.

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 520542155 is about 22815.3929398553. The cubic root of 520542155 is about 804.4245234403.

The spelling of 520542155 in words is "five hundred twenty million, five hundred forty-two thousand, one hundred fifty-five".