23056551 has 24 divisors (see below), whose sum is σ = 38712960. Its totient is φ = 12949776.

The previous prime is 23056543. The next prime is 23056567. The reversal of 23056551 is 15565032.

23056551 is a `hidden beast` number, since 2 + 3 + 0 + 5 + 655 + 1 = 666.

It is not a de Polignac number, because 23056551 - 2³ = 23056543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23056531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 616 + ... + 6818.

It is an arithmetic number, because the mean of its divisors is an integer number (1613040).

Almost surely, 2^23056551 is an apocalyptic number.

23056551 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23056551 is a deficient number, since it is larger than the sum of its proper divisors (15656409).

23056551 is a wasteful number, since it uses less digits than its factorization.

23056551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6275 (or 6272 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 23056551 is about 4801.7237529870. The cubic root of 23056551 is about 284.6195847875.

The spelling of 23056551 in words is "twenty-three million, fifty-six thousand, five hundred fifty-one".