255774620 has 24 divisors (see below), whose sum is σ = 538834464. Its totient is φ = 101984576.

The previous prime is 255774613. The next prime is 255774671. The reversal of 255774620 is 26477552.

It is a happy number.

It is a super-2 number, since 2×255774620² = 130841312472288800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13832 + ... + 26511.

It is an arithmetic number, because the mean of its divisors is an integer number (22451436).

Almost surely, 2^255774620 is an apocalyptic number.

255774620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255774620 is an abundant number, since it is smaller than the sum of its proper divisors (283059844).

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

255774620 is a wasteful number, since it uses less digits than its factorization.

255774620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40669 (or 40667 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 38.

The square root of 255774620 is about 15992.9553241419. The cubic root of 255774620 is about 634.7740283433.

It can be divided in two parts, 2557 and 74620, that added together give a palindrome (77177).

The spelling of 255774620 in words is "two hundred fifty-five million, seven hundred seventy-four thousand, six hundred twenty".