53135668 has 6 divisors (see below), whose sum is σ = 92987426. Its totient is φ = 26567832.

The previous prime is 53135639. The next prime is 53135701. The reversal of 53135668 is 86653135.

It can be written as a sum of positive squares in only one way, i.e., 37675044 + 15460624 = 6138^2 + 3932^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6641955 + ... + 6641962.

Almost surely, 2^53135668 is an apocalyptic number.

It is an amenable number.

53135668 is a deficient number, since it is larger than the sum of its proper divisors (39851758).

53135668 is a wasteful number, since it uses less digits than its factorization.

53135668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13283921 (or 13283919 counting only the distinct ones).

The product of its digits is 64800, while the sum is 37.

The square root of 53135668 is about 7289.4216505838. The cubic root of 53135668 is about 375.9488103694.

The spelling of 53135668 in words is "fifty-three million, one hundred thirty-five thousand, six hundred sixty-eight".