53640900 has 72 divisors (see below), whose sum is σ = 172454240. Its totient is φ = 14303520.

The previous prime is 53640893. The next prime is 53640913. The reversal of 53640900 is 904635.

It is a happy number.

53640900 is a `hidden beast` number, since 536 + 40 + 90 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7234 + ... + 12633.

Almost surely, 2^53640900 is an apocalyptic number.

53640900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

53640900 is an abundant number, since it is smaller than the sum of its proper divisors (118813340).

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

53640900 is a wasteful number, since it uses less digits than its factorization.

53640900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19890 (or 19877 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 53640900 is about 7323.9948115765. The cubic root of 53640900 is about 377.1366033497.

The spelling of 53640900 in words is "fifty-three million, six hundred forty thousand, nine hundred".