52561144 has 32 divisors (see below), whose sum is σ = 109846800. Its totient is φ = 23431680.

The previous prime is 52561129. The next prime is 52561183. The reversal of 52561144 is 44116525.

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, 7587 + ... + 12754.

Almost surely, 2^52561144 is an apocalyptic number.

It is an amenable number.

52561144 is an abundant number, since it is smaller than the sum of its proper divisors (57285656).

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

52561144 is a wasteful number, since it uses less digits than its factorization.

52561144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20383 (or 20379 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 52561144 is about 7249.9064821555. The cubic root of 52561144 is about 374.5889279210.

Adding to 52561144 its reverse (44116525), we get a palindrome (96677669).

It can be divided in two parts, 5256 and 1144, that added together give a square (6400 = 80²).

The spelling of 52561144 in words is "fifty-two million, five hundred sixty-one thousand, one hundred forty-four".