53720704 has 16 divisors (see below), whose sum is σ = 107021970. Its totient is φ = 26860288.

The previous prime is 53720677. The next prime is 53720743. The reversal of 53720704 is 40702735.

It can be written as a sum of positive squares in only one way, i.e., 36481600 + 17239104 = 6040^2 + 4152^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209719 + ... + 209974.

Almost surely, 2^53720704 is an apocalyptic number.

It is an amenable number.

53720704 is a deficient number, since it is larger than the sum of its proper divisors (53301266).

53720704 is an equidigital number, since it uses as much as digits as its factorization.

53720704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419707 (or 419695 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 53720704 is about 7329.4409063721. The cubic root of 53720704 is about 377.3235384201.

The spelling of 53720704 in words is "fifty-three million, seven hundred twenty thousand, seven hundred four".