53657992 has 16 divisors (see below), whose sum is σ = 103328460. Its totient is φ = 26103744.

The previous prime is 53657987. The next prime is 53657999. The reversal of 53657992 is 29975635.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 52504516 + 1153476 = 7246^2 + 1074^2 .

It is not an unprimeable number, because it can be changed into a prime (53657999) 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, 90343 + ... + 90934.

Almost surely, 2^53657992 is an apocalyptic number.

It is an amenable number.

53657992 is a deficient number, since it is larger than the sum of its proper divisors (49670468).

53657992 is a wasteful number, since it uses less digits than its factorization.

53657992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181320 (or 181316 counting only the distinct ones).

The product of its digits is 510300, while the sum is 46.

The square root of 53657992 is about 7325.1615681840. The cubic root of 53657992 is about 377.1766557121.

The spelling of 53657992 in words is "fifty-three million, six hundred fifty-seven thousand, nine hundred ninety-two".