53575812 has 72 divisors (see below), whose sum is σ = 142268672. Its totient is φ = 16977600.

The previous prime is 53575777. The next prime is 53575829. The reversal of 53575812 is 21857535.

53575812 is a `hidden beast` number, since 5 + 3 + 575 + 81 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 67683 + ... + 68469.

Almost surely, 2^53575812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53575812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71134336).

53575812 is an abundant number, since it is smaller than the sum of its proper divisors (88692860).

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

53575812 is a wasteful number, since it uses less digits than its factorization.

53575812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889 (or 884 counting only the distinct ones).

The product of its digits is 42000, while the sum is 36.

The square root of 53575812 is about 7319.5499861672. The cubic root of 53575812 is about 376.9840021167.

The spelling of 53575812 in words is "fifty-three million, five hundred seventy-five thousand, eight hundred twelve".