53037640 has 16 divisors (see below), whose sum is σ = 119334780. Its totient is φ = 21215040.

The previous prime is 53037623. The next prime is 53037643. The reversal of 53037640 is 4673035.

It can be written as a sum of positive squares in 2 ways, for example, as 48135844 + 4901796 = 6938^2 + 2214^2 .

It is a junction number, because it is equal to n+sod(n) for n = 53037599 and 53037608.

It is not an unprimeable number, because it can be changed into a prime (53037643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 662931 + ... + 663010.

Almost surely, 2^53037640 is an apocalyptic number.

It is an amenable number.

53037640 is an abundant number, since it is smaller than the sum of its proper divisors (66297140).

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

53037640 is a wasteful number, since it uses less digits than its factorization.

53037640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325952 (or 1325948 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 53037640 is about 7282.6945562752. The cubic root of 53037640 is about 375.7174767671.

The spelling of 53037640 in words is "fifty-three million, thirty-seven thousand, six hundred forty".