53312513 has 8 divisors (see below), whose sum is σ = 54282240. Its totient is φ = 52351200.

The previous prime is 53312507. The next prime is 53312543. The reversal of 53312513 is 31521335.

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 53312513 - 2¹² = 53308417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53312543) 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, 11456 + ... + 15422.

It is an arithmetic number, because the mean of its divisors is an integer number (6785280).

Almost surely, 2^53312513 is an apocalyptic number.

It is an amenable number.

53312513 is a deficient number, since it is larger than the sum of its proper divisors (969727).

53312513 is a wasteful number, since it uses less digits than its factorization.

53312513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4207.

The product of its digits is 1350, while the sum is 23.

The square root of 53312513 is about 7301.5418234781. The cubic root of 53312513 is about 376.3654234677.

Adding to 53312513 its reverse (31521335), we get a palindrome (84833848).

The spelling of 53312513 in words is "fifty-three million, three hundred twelve thousand, five hundred thirteen".