23155552 has 48 divisors (see below), whose sum is σ = 52496640. Its totient is φ = 9848448.

The previous prime is 23155523. The next prime is 23155567. The reversal of 23155552 is 25555132.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 23155552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37099 + ... + 37717.

It is an arithmetic number, because the mean of its divisors is an integer number (1093680).

Almost surely, 2^23155552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23155552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26248320).

23155552 is an abundant number, since it is smaller than the sum of its proper divisors (29341088).

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

23155552 is a wasteful number, since it uses less digits than its factorization.

23155552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803 (or 795 counting only the distinct ones).

The product of its digits is 7500, while the sum is 28.

The square root of 23155552 is about 4812.0216125865. The cubic root of 23155552 is about 285.0263728544.

The spelling of 23155552 in words is "twenty-three million, one hundred fifty-five thousand, five hundred fifty-two".