52561236 has 96 divisors (see below), whose sum is σ = 152535040. Its totient is φ = 13716864.

The previous prime is 52561219. The next prime is 52561237. The reversal of 52561236 is 63216525.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52561237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138495 + ... + 138873.

Almost surely, 2^52561236 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 52561236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76267520).

52561236 is an abundant number, since it is smaller than the sum of its proper divisors (99973804).

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

52561236 is a wasteful number, since it uses less digits than its factorization.

52561236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533 (or 531 counting only the distinct ones).

The product of its digits is 10800, while the sum is 30.

The square root of 52561236 is about 7249.9128270621. The cubic root of 52561236 is about 374.5891464738.

It can be divided in two parts, 525 and 61236, that multiplied together give a square (32148900 = 5670²).

The spelling of 52561236 in words is "fifty-two million, five hundred sixty-one thousand, two hundred thirty-six".