23553554 has 4 divisors (see below), whose sum is σ = 35330334. Its totient is φ = 11776776.

The previous prime is 23553553. The next prime is 23553581. The reversal of 23553554 is 45535532.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16933225 + 6620329 = 4115^2 + 2573^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23553554.

It is not an unprimeable number, because it can be changed into a prime (23553553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5888387 + ... + 5888390.

Almost surely, 2^23553554 is an apocalyptic number.

23553554 is a deficient number, since it is larger than the sum of its proper divisors (11776780).

23553554 is a wasteful number, since it uses less digits than its factorization.

23553554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11776779.

The product of its digits is 45000, while the sum is 32.

The square root of 23553554 is about 4853.2003873733. The cubic root of 23553554 is about 286.6501339543.

The spelling of 23553554 in words is "twenty-three million, five hundred fifty-three thousand, five hundred fifty-four".