52931556 has 60 divisors (see below), whose sum is σ = 144410112. Its totient is φ = 16874352.

The previous prime is 52931443. The next prime is 52931561. The reversal of 52931556 is 65513925.

It is a super-2 number, since 2×52931556² = 5603499241162272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 52931556.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3901 + ... + 11003.

Almost surely, 2^52931556 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 52931556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72205056).

52931556 is an abundant number, since it is smaller than the sum of its proper divisors (91478556).

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

52931556 is a wasteful number, since it uses less digits than its factorization.

52931556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7142 (or 7131 counting only the distinct ones).

The product of its digits is 40500, while the sum is 36.

The square root of 52931556 is about 7275.4076174466. The cubic root of 52931556 is about 375.4668106597.

The spelling of 52931556 in words is "fifty-two million, nine hundred thirty-one thousand, five hundred fifty-six".