57015313 has 2 divisors, whose sum is σ = 57015314. Its totient is φ = 57015312.

The previous prime is 57015311. The next prime is 57015317. The reversal of 57015313 is 31351075.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55457809 + 1557504 = 7447^2 + 1248^2 .

It is a cyclic number.

It is not a de Polignac number, because 57015313 - 2¹ = 57015311 is a prime.

Together with 57015311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (57015311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28507656 + 28507657.

It is an arithmetic number, because the mean of its divisors is an integer number (28507657).

Almost surely, 2^57015313 is an apocalyptic number.

It is an amenable number.

57015313 is a deficient number, since it is larger than the sum of its proper divisors (1).

57015313 is an equidigital number, since it uses as much as digits as its factorization.

57015313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1575, while the sum is 25.

The square root of 57015313 is about 7550.8484953679. The cubic root of 57015313 is about 384.8845732571.

Adding to 57015313 its reverse (31351075), we get a palindrome (88366388).

The spelling of 57015313 in words is "fifty-seven million, fifteen thousand, three hundred thirteen".