53136385 has 8 divisors (see below), whose sum is σ = 63826920. Its totient is φ = 42466944.

The previous prime is 53136379. The next prime is 53136389. The reversal of 53136385 is 58363135.

It can be written as a sum of positive squares in 4 ways, for example, as 10010896 + 43125489 = 3164^2 + 6567^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53136385 - 2¹¹ = 53134337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53136385.

It is not an unprimeable number, because it can be changed into a prime (53136389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 939 + ... + 10351.

It is an arithmetic number, because the mean of its divisors is an integer number (7978365).

Almost surely, 2^53136385 is an apocalyptic number.

It is an amenable number.

53136385 is a deficient number, since it is larger than the sum of its proper divisors (10690535).

53136385 is a wasteful number, since it uses less digits than its factorization.

53136385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10547.

The product of its digits is 32400, while the sum is 34.

The square root of 53136385 is about 7289.4708312744. The cubic root of 53136385 is about 375.9505013496.

The spelling of 53136385 in words is "fifty-three million, one hundred thirty-six thousand, three hundred eighty-five".