255779456 has 16 divisors (see below), whose sum is σ = 509560890. Its totient is φ = 127889664.

The previous prime is 255779453. The next prime is 255779477. The reversal of 255779456 is 654977552.

It is a happy number.

255779456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 148449856 + 107329600 = 12184^2 + 10360^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×255779456² = 130846260223311872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (255779453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 999011 + ... + 999266.

Almost surely, 2^255779456 is an apocalyptic number.

It is an amenable number.

255779456 is a deficient number, since it is larger than the sum of its proper divisors (253781434).

255779456 is an equidigital number, since it uses as much as digits as its factorization.

255779456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998291 (or 1998279 counting only the distinct ones).

The product of its digits is 2646000, while the sum is 50.

The square root of 255779456 is about 15993.1065149958. The cubic root of 255779456 is about 634.7780289329.

The spelling of 255779456 in words is "two hundred fifty-five million, seven hundred seventy-nine thousand, four hundred fifty-six".