255506120 has 16 divisors (see below), whose sum is σ = 574888860. Its totient is φ = 102202432.

The previous prime is 255506113. The next prime is 255506161. The reversal of 255506120 is 21605552.

It can be written as a sum of positive squares in 2 ways, for example, as 255424324 + 81796 = 15982^2 + 286^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 255506120.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3193787 + ... + 3193866.

Almost surely, 2^255506120 is an apocalyptic number.

255506120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255506120 is an abundant number, since it is smaller than the sum of its proper divisors (319382740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255506120 is a wasteful number, since it uses less digits than its factorization.

255506120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6387664 (or 6387660 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 255506120 is about 15984.5587990410. The cubic root of 255506120 is about 634.5518320724.

The spelling of 255506120 in words is "two hundred fifty-five million, five hundred six thousand, one hundred twenty".