72551256 has 32 divisors (see below), whose sum is σ = 181785600. Its totient is φ = 24129440.

The previous prime is 72551251. The next prime is 72551273. The reversal of 72551256 is 65215527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72551251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8341 + ... + 14651.

It is an arithmetic number, because the mean of its divisors is an integer number (5680800).

Almost surely, 2^72551256 is an apocalyptic number.

It is an amenable number.

72551256 is an abundant number, since it is smaller than the sum of its proper divisors (109234344).

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

72551256 is a wasteful number, since it uses less digits than its factorization.

72551256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6799 (or 6795 counting only the distinct ones).

The product of its digits is 21000, while the sum is 33.

The square root of 72551256 is about 8517.7025071318. The cubic root of 72551256 is about 417.0757874547.

The spelling of 72551256 in words is "seventy-two million, five hundred fifty-one thousand, two hundred fifty-six".