520072655 has 8 divisors (see below), whose sum is σ = 656934000. Its totient is φ = 394160256.

The previous prime is 520072639. The next prime is 520072673. The reversal of 520072655 is 556270025.

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 520072655 - 2⁴ = 520072639 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2737130 + ... + 2737319.

It is an arithmetic number, because the mean of its divisors is an integer number (82116750).

Almost surely, 2^520072655 is an apocalyptic number.

520072655 is a deficient number, since it is larger than the sum of its proper divisors (136861345).

520072655 is a wasteful number, since it uses less digits than its factorization.

520072655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5474473.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 520072655 is about 22805.1015126002. The cubic root of 520072655 is about 804.1826020032.

The spelling of 520072655 in words is "five hundred twenty million, seventy-two thousand, six hundred fifty-five".