23551651 has 2 divisors, whose sum is σ = 23551652. Its totient is φ = 23551650.

The previous prime is 23551607. The next prime is 23551669. The reversal of 23551651 is 15615532.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23551651 - 2¹⁵ = 23518883 is a prime.

It is not a weakly prime, because it can be changed into another prime (23551601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11775825 + 11775826.

It is an arithmetic number, because the mean of its divisors is an integer number (11775826).

Almost surely, 2^23551651 is an apocalyptic number.

23551651 is a deficient number, since it is larger than the sum of its proper divisors (1).

23551651 is an equidigital number, since it uses as much as digits as its factorization.

23551651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4500, while the sum is 28.

The square root of 23551651 is about 4853.0043272183. The cubic root of 23551651 is about 286.6424138186.

The spelling of 23551651 in words is "twenty-three million, five hundred fifty-one thousand, six hundred fifty-one".