53071313 has 4 divisors (see below), whose sum is σ = 55864560. Its totient is φ = 50278068.

The previous prime is 53071309. The next prime is 53071321. The reversal of 53071313 is 31317035.

It is a happy number.

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 not a de Polignac number, because 53071313 - 2² = 53071309 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53071393) 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, 1396595 + ... + 1396632.

It is an arithmetic number, because the mean of its divisors is an integer number (13966140).

Almost surely, 2^53071313 is an apocalyptic number.

It is an amenable number.

53071313 is a deficient number, since it is larger than the sum of its proper divisors (2793247).

53071313 is a wasteful number, since it uses less digits than its factorization.

53071313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2793246.

The product of its (nonzero) digits is 945, while the sum is 23.

The square root of 53071313 is about 7285.0060398053. The cubic root of 53071313 is about 375.7969728766.

Adding to 53071313 its reverse (31317035), we get a palindrome (84388348).

The spelling of 53071313 in words is "fifty-three million, seventy-one thousand, three hundred thirteen".