23155523 has 2 divisors, whose sum is σ = 23155524. Its totient is φ = 23155522.

The previous prime is 23155519. The next prime is 23155567. The reversal of 23155523 is 32555132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23155523 - 2² = 23155519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23155492 and 23155501.

It is not a weakly prime, because it can be changed into another prime (23155123) 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 as a sum of consecutive naturals, namely, 11577761 + 11577762.

It is an arithmetic number, because the mean of its divisors is an integer number (11577762).

Almost surely, 2^23155523 is an apocalyptic number.

23155523 is a deficient number, since it is larger than the sum of its proper divisors (1).

23155523 is an equidigital number, since it uses as much as digits as its factorization.

23155523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4500, while the sum is 26.

The square root of 23155523 is about 4812.0185992991. The cubic root of 23155523 is about 285.0262538654.

The spelling of 23155523 in words is "twenty-three million, one hundred fifty-five thousand, five hundred twenty-three".