23561552 has 60 divisors (see below), whose sum is σ = 54473076. Its totient is φ = 9838080.

The previous prime is 23561509. The next prime is 23561561. The reversal of 23561552 is 25516532.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12645136 + 10916416 = 3556^2 + 3304^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31778 + ... + 32510.

Almost surely, 2^23561552 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 23561552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27236538).

23561552 is an abundant number, since it is smaller than the sum of its proper divisors (30911524).

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

23561552 is a wasteful number, since it uses less digits than its factorization.

23561552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796 (or 783 counting only the distinct ones).

The product of its digits is 9000, while the sum is 29.

The square root of 23561552 is about 4854.0243097867. The cubic root of 23561552 is about 286.6825758853.

The spelling of 23561552 in words is "twenty-three million, five hundred sixty-one thousand, five hundred fifty-two".