53135815 has 8 divisors (see below), whose sum is σ = 63822240. Its totient is φ = 42469152.

The previous prime is 53135809. The next prime is 53135833. The reversal of 53135815 is 51853135.

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 53135815 - 2¹⁹ = 52611527 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1822 + ... + 10468.

It is an arithmetic number, because the mean of its divisors is an integer number (7977780).

Almost surely, 2^53135815 is an apocalyptic number.

53135815 is a deficient number, since it is larger than the sum of its proper divisors (10686425).

53135815 is a wasteful number, since it uses less digits than its factorization.

53135815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9881.

The product of its digits is 9000, while the sum is 31.

The square root of 53135815 is about 7289.4317336813. The cubic root of 53135815 is about 375.9491570569.

The spelling of 53135815 in words is "fifty-three million, one hundred thirty-five thousand, eight hundred fifteen".