53401720 has 16 divisors (see below), whose sum is σ = 120153960. Its totient is φ = 21360672.

The previous prime is 53401703. The next prime is 53401739. The reversal of 53401720 is 2710435.

It is a junction number, because it is equal to n+sod(n) for n = 53401691 and 53401700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 667482 + ... + 667561.

Almost surely, 2^53401720 is an apocalyptic number.

It is an amenable number.

53401720 is an abundant number, since it is smaller than the sum of its proper divisors (66752240).

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

53401720 is a wasteful number, since it uses less digits than its factorization.

53401720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335054 (or 1335050 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 53401720 is about 7307.6480484490. The cubic root of 53401720 is about 376.5752286292.

The spelling of 53401720 in words is "fifty-three million, four hundred one thousand, seven hundred twenty".