23051555 has 16 divisors (see below), whose sum is σ = 28957824. Its totient is φ = 17596800.

The previous prime is 23051527. The next prime is 23051603. The reversal of 23051555 is 55515032.

It is not a de Polignac number, because 23051555 - 2⁸ = 23051299 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8630 + ... + 10980.

It is an arithmetic number, because the mean of its divisors is an integer number (1809864).

Almost surely, 2^23051555 is an apocalyptic number.

23051555 is a deficient number, since it is larger than the sum of its proper divisors (5906269).

23051555 is a wasteful number, since it uses less digits than its factorization.

23051555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2446.

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 23051555 is about 4801.2034949583. The cubic root of 23051555 is about 284.5990257403.

Adding to 23051555 its reverse (55515032), we get a palindrome (78566587).

The spelling of 23051555 in words is "twenty-three million, fifty-one thousand, five hundred fifty-five".