23051556 has 36 divisors (see below), whose sum is σ = 63567504. Its totient is φ = 6985200.

The previous prime is 23051527. The next prime is 23051603. The reversal of 23051556 is 65515032.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×23051556² = 1062748468042272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28710 + ... + 29501.

It is an arithmetic number, because the mean of its divisors is an integer number (1765764).

Almost surely, 2^23051556 is an apocalyptic number.

It is an amenable number.

23051556 is an abundant number, since it is smaller than the sum of its proper divisors (40515948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23051556 is a wasteful number, since it uses less digits than its factorization.

23051556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58232 (or 58227 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 23051556 is about 4801.2035990989. The cubic root of 23051556 is about 284.5990298557.

Adding to 23051556 its reverse (65515032), we get a palindrome (88566588).

The spelling of 23051556 in words is "twenty-three million, fifty-one thousand, five hundred fifty-six".