256551060 has 24 divisors (see below), whose sum is σ = 718343136. Its totient is φ = 68413600.

The previous prime is 256551059. The next prime is 256551067. The reversal of 256551060 is 60155652.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256551067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2137866 + ... + 2137985.

It is an arithmetic number, because the mean of its divisors is an integer number (29930964).

Almost surely, 2^256551060 is an apocalyptic number.

256551060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256551060 is an abundant number, since it is smaller than the sum of its proper divisors (461792076).

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

256551060 is a wasteful number, since it uses less digits than its factorization.

256551060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4275863 (or 4275861 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 256551060 is about 16017.2113677756. The cubic root of 256551060 is about 635.4156949097.

The spelling of 256551060 in words is "two hundred fifty-six million, five hundred fifty-one thousand, sixty".