53638899 has 16 divisors (see below), whose sum is σ = 72422400. Its totient is φ = 35310816.

The previous prime is 53638889. The next prime is 53638901. The reversal of 53638899 is 99883635.

It is not a de Polignac number, because 53638899 - 2⁷ = 53638771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53638889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111742 + ... + 112220.

It is an arithmetic number, because the mean of its divisors is an integer number (4526400).

Almost surely, 2^53638899 is an apocalyptic number.

53638899 is a deficient number, since it is larger than the sum of its proper divisors (18783501).

53638899 is a wasteful number, since it uses less digits than its factorization.

53638899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874.

The product of its digits is 1399680, while the sum is 51.

The square root of 53638899 is about 7323.8582045258. The cubic root of 53638899 is about 377.1319137706.

The spelling of 53638899 in words is "fifty-three million, six hundred thirty-eight thousand, eight hundred ninety-nine".