520630255 has 8 divisors (see below), whose sum is σ = 630942624. Its totient is φ = 412380000.

The previous prime is 520630249. The next prime is 520630261. The reversal of 520630255 is 552036025.

It is an interprime number because it is at equal distance from previous prime (520630249) and next prime (520630261).

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

It is not a de Polignac number, because 520630255 - 2³ = 520630247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 514971 + ... + 515980.

It is an arithmetic number, because the mean of its divisors is an integer number (78867828).

Almost surely, 2^520630255 is an apocalyptic number.

520630255 is a deficient number, since it is larger than the sum of its proper divisors (110312369).

520630255 is a wasteful number, since it uses less digits than its factorization.

520630255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031057.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 520630255 is about 22817.3235722334. The cubic root of 520630255 is about 804.4699029240.

The spelling of 520630255 in words is "five hundred twenty million, six hundred thirty thousand, two hundred fifty-five".