57311513 has 8 divisors (see below), whose sum is σ = 66573120. Its totient is φ = 48318480.

The previous prime is 57311491. The next prime is 57311519. The reversal of 57311513 is 31511375.

57311513 = 132² + 133² + ... + 558².

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57311513 - 2¹⁶ = 57245977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57311519) 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, 66683 + ... + 67536.

It is an arithmetic number, because the mean of its divisors is an integer number (8321640).

Almost surely, 2^57311513 is an apocalyptic number.

It is an amenable number.

57311513 is a deficient number, since it is larger than the sum of its proper divisors (9261607).

57311513 is a wasteful number, since it uses less digits than its factorization.

57311513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134287.

The product of its digits is 1575, while the sum is 26.

The square root of 57311513 is about 7570.4367773597. The cubic root of 57311513 is about 385.5499264399.

Adding to 57311513 its reverse (31511375), we get a palindrome (88822888).

The spelling of 57311513 in words is "fifty-seven million, three hundred eleven thousand, five hundred thirteen".