23190055 has 16 divisors (see below), whose sum is σ = 32209920. Its totient is φ = 15698592.

The previous prime is 23190047. The next prime is 23190059. The reversal of 23190055 is 55009132.

It is not a de Polignac number, because 23190055 - 2³ = 23190047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23190059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1429 + ... + 6958.

It is an arithmetic number, because the mean of its divisors is an integer number (2013120).

Almost surely, 2^23190055 is an apocalyptic number.

23190055 is a deficient number, since it is larger than the sum of its proper divisors (9019865).

23190055 is an equidigital number, since it uses as much as digits as its factorization.

23190055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8478.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 23190055 is about 4815.6053617380. The cubic root of 23190055 is about 285.1678707330.

Adding to 23190055 its reverse (55009132), we get a palindrome (78199187).

The spelling of 23190055 in words is "twenty-three million, one hundred ninety thousand, fifty-five".