53121501200 has 60 divisors (see below), whose sum is σ = 129058475220. Its totient is φ = 21009838080.

The previous prime is 53121501163. The next prime is 53121501239. The reversal of 53121501200 is 210512135.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 18340743184 + 34780758016 = 135428^2 + 186496^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 710489 + ... + 781688.

It is an arithmetic number, because the mean of its divisors is an integer number (2150974587).

Almost surely, 2^53121501200 is an apocalyptic number.

53121501200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

53121501200 is an abundant number, since it is smaller than the sum of its proper divisors (75936974020).

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

53121501200 is a wasteful number, since it uses less digits than its factorization.

53121501200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492284 (or 1492273 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The spelling of 53121501200 in words is "fifty-three billion, one hundred twenty-one million, five hundred one thousand, two hundred".