255755772 has 24 divisors (see below), whose sum is σ = 663070800. Its totient is φ = 85251888.

The previous prime is 255755771. The next prime is 255755777. The reversal of 255755772 is 277557552.

255755772 is a `hidden beast` number, since 2 + 5 + 5 + 75 + 577 + 2 = 666.

It is a super-2 number, since 2×255755772² = 130822029822631968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255755771) 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, 1183947 + ... + 1184162.

It is an arithmetic number, because the mean of its divisors is an integer number (27627950).

Almost surely, 2^255755772 is an apocalyptic number.

It is an amenable number.

255755772 is an abundant number, since it is smaller than the sum of its proper divisors (407315028).

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

255755772 is a wasteful number, since it uses less digits than its factorization.

255755772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2368122 (or 2368114 counting only the distinct ones).

The product of its digits is 857500, while the sum is 45.

The square root of 255755772 is about 15992.3660538396. The cubic root of 255755772 is about 634.7584358205.

The spelling of 255755772 in words is "two hundred fifty-five million, seven hundred fifty-five thousand, seven hundred seventy-two".