23555091 has 8 divisors (see below), whose sum is σ = 35893504. Its totient is φ = 13460040.

The previous prime is 23555039. The next prime is 23555111. The reversal of 23555091 is 19055532.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23555091 - 2⁶ = 23555027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23555011) 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 7 ways as a sum of consecutive naturals, for example, 560815 + ... + 560856.

It is an arithmetic number, because the mean of its divisors is an integer number (4486688).

Almost surely, 2^23555091 is an apocalyptic number.

23555091 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23555091 is a deficient number, since it is larger than the sum of its proper divisors (12338413).

23555091 is a wasteful number, since it uses less digits than its factorization.

23555091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121681.

The product of its (nonzero) digits is 6750, while the sum is 30.

The square root of 23555091 is about 4853.3587339079. The cubic root of 23555091 is about 286.6563689889.

It can be divided in two parts, 235550 and 91, that added together give a triangular number (235641 = T₆₈₆).

The spelling of 23555091 in words is "twenty-three million, five hundred fifty-five thousand, ninety-one".