53135681 has 8 divisors (see below), whose sum is σ = 55520640. Its totient is φ = 50756992.

The previous prime is 53135639. The next prime is 53135701. The reversal of 53135681 is 18653135.

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 53135681 - 2¹⁰ = 53134657 is a prime.

It is a super-2 number, since 2×53135681² = 5646801190667522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53135281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27185 + ... + 29073.

It is an arithmetic number, because the mean of its divisors is an integer number (6940080).

Almost surely, 2^53135681 is an apocalyptic number.

It is an amenable number.

53135681 is a deficient number, since it is larger than the sum of its proper divisors (2384959).

53135681 is a wasteful number, since it uses less digits than its factorization.

53135681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3135.

The product of its digits is 10800, while the sum is 32.

The square root of 53135681 is about 7289.4225422869. The cubic root of 53135681 is about 375.9488410289.

The spelling of 53135681 in words is "fifty-three million, one hundred thirty-five thousand, six hundred eighty-one".