53720404 has 12 divisors (see below), whose sum is σ = 94067764. Its totient is φ = 26843904.

The previous prime is 53720377. The next prime is 53720419. The reversal of 53720404 is 40402735.

It can be written as a sum of positive squares in 2 ways, for example, as 35640900 + 18079504 = 5970^2 + 4252^2 .

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, 6244 + ... + 12100.

Almost surely, 2^53720404 is an apocalyptic number.

It is an amenable number.

53720404 is a deficient number, since it is larger than the sum of its proper divisors (40347360).

53720404 is a wasteful number, since it uses less digits than its factorization.

53720404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8154 (or 8152 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 53720404 is about 7329.4204409353. The cubic root of 53720404 is about 377.3228360387.

The spelling of 53720404 in words is "fifty-three million, seven hundred twenty thousand, four hundred four".