255501556 has 24 divisors (see below), whose sum is σ = 457652160. Its totient is φ = 124779072.

The previous prime is 255501553. The next prime is 255501583. The reversal of 255501556 is 655105552.

It is a super-2 number, since 2×255501556² = 130562090236842272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255501553) 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, 25225 + ... + 33871.

It is an arithmetic number, because the mean of its divisors is an integer number (19068840).

Almost surely, 2^255501556 is an apocalyptic number.

It is an amenable number.

255501556 is a deficient number, since it is larger than the sum of its proper divisors (202150604).

255501556 is a wasteful number, since it uses less digits than its factorization.

255501556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8823 (or 8821 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 34.

The square root of 255501556 is about 15984.4160356267. The cubic root of 255501556 is about 634.5480538044.

The spelling of 255501556 in words is "two hundred fifty-five million, five hundred one thousand, five hundred fifty-six".