53172636 has 24 divisors (see below), whose sum is σ = 135348864. Its totient is φ = 16112880.

The previous prime is 53172599. The next prime is 53172653. The reversal of 53172636 is 63627135.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 53172597 and 53172606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201280 + ... + 201543.

It is an arithmetic number, because the mean of its divisors is an integer number (5639536).

Almost surely, 2^53172636 is an apocalyptic number.

It is an amenable number.

53172636 is an abundant number, since it is smaller than the sum of its proper divisors (82176228).

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

53172636 is a wasteful number, since it uses less digits than its factorization.

53172636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402841 (or 402839 counting only the distinct ones).

The product of its digits is 22680, while the sum is 33.

The square root of 53172636 is about 7291.9569389842. The cubic root of 53172636 is about 376.0359762619.

The spelling of 53172636 in words is "fifty-three million, one hundred seventy-two thousand, six hundred thirty-six".