53921360 has 20 divisors (see below), whose sum is σ = 125367348. Its totient is φ = 21568512.

The previous prime is 53921359. The next prime is 53921363. The reversal of 53921360 is 6312935.

It can be written as a sum of positive squares in 2 ways, for example, as 30958096 + 22963264 = 5564^2 + 4792^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-4 number, since 4×53921360⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53921363) 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, 336929 + ... + 337088.

Almost surely, 2^53921360 is an apocalyptic number.

It is an amenable number.

53921360 is an abundant number, since it is smaller than the sum of its proper divisors (71445988).

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

53921360 is a wasteful number, since it uses less digits than its factorization.

53921360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674030 (or 674024 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 53921360 is about 7343.1165045912. The cubic root of 53921360 is about 377.7927439925.

The spelling of 53921360 in words is "fifty-three million, nine hundred twenty-one thousand, three hundred sixty".