53640136 has 32 divisors (see below), whose sum is σ = 112402080. Its totient is φ = 23785600.

The previous prime is 53640109. The next prime is 53640143. The reversal of 53640136 is 63104635.

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, 3826 + ... + 11041.

It is an arithmetic number, because the mean of its divisors is an integer number (3512565).

Almost surely, 2^53640136 is an apocalyptic number.

It is an amenable number.

53640136 is an abundant number, since it is smaller than the sum of its proper divisors (58761944).

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

53640136 is a wasteful number, since it uses less digits than its factorization.

53640136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14925 (or 14921 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 53640136 is about 7323.9426540628. The cubic root of 53640136 is about 377.1348128395.

The spelling of 53640136 in words is "fifty-three million, six hundred forty thousand, one hundred thirty-six".