53990736 has 20 divisors (see below), whose sum is σ = 139476192. Its totient is φ = 17996896.

The previous prime is 53990731. The next prime is 53990749. The reversal of 53990736 is 63709935.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53990731) 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, 562356 + ... + 562451.

Almost surely, 2^53990736 is an apocalyptic number.

It is an amenable number.

53990736 is an abundant number, since it is smaller than the sum of its proper divisors (85485456).

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

53990736 is a wasteful number, since it uses less digits than its factorization.

53990736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124818 (or 1124812 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 42.

The square root of 53990736 is about 7347.8388659524. The cubic root of 53990736 is about 377.9546990867.

The spelling of 53990736 in words is "fifty-three million, nine hundred ninety thousand, seven hundred thirty-six".