53999137 has 4 divisors (see below), whose sum is σ = 54387760. Its totient is φ = 53610516.

The previous prime is 53999111. The next prime is 53999149. The reversal of 53999137 is 73199935.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53999137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53999437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194103 + ... + 194380.

It is an arithmetic number, because the mean of its divisors is an integer number (13596940).

Almost surely, 2^53999137 is an apocalyptic number.

It is an amenable number.

53999137 is a deficient number, since it is larger than the sum of its proper divisors (388623).

53999137 is a wasteful number, since it uses less digits than its factorization.

53999137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388622.

The product of its digits is 229635, while the sum is 46.

The square root of 53999137 is about 7348.4105084025. The cubic root of 53999137 is about 377.9743014172.

The spelling of 53999137 in words is "fifty-three million, nine hundred ninety-nine thousand, one hundred thirty-seven".