256226553 has 24 divisors (see below), whose sum is σ = 404292096. Its totient is φ = 155080800.

The previous prime is 256226527. The next prime is 256226599. The reversal of 256226553 is 355622652.

256226553 is a `hidden beast` number, since 25 + 62 + 26 + 553 = 666.

It is not a de Polignac number, because 256226553 - 2⁶ = 256226489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256226053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106423 + ... + 108803.

It is an arithmetic number, because the mean of its divisors is an integer number (16845504).

Almost surely, 2^256226553 is an apocalyptic number.

It is an amenable number.

256226553 is a deficient number, since it is larger than the sum of its proper divisors (148065543).

256226553 is a wasteful number, since it uses less digits than its factorization.

256226553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3485 (or 3482 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 256226553 is about 16007.0782155895. The cubic root of 256226553 is about 635.1476730971.

The spelling of 256226553 in words is "two hundred fifty-six million, two hundred twenty-six thousand, five hundred fifty-three".