3157513 has 4 divisors (see below), whose sum is σ = 3166020. Its totient is φ = 3149008.

The previous prime is 3157501. The next prime is 3157537.

3157513 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1885129 + 1272384 = 1373^2 + 1128^2 .

It is a cyclic number.

It is not a de Polignac number, because 3157513 - 2⁵ = 3157481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3157573) 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, 3670 + ... + 4447.

It is an arithmetic number, because the mean of its divisors is an integer number (791505).

Almost surely, 2^3157513 is an apocalyptic number.

It is an amenable number.

3157513 is a deficient number, since it is larger than the sum of its proper divisors (8507).

3157513 is an equidigital number, since it uses as much as digits as its factorization.

3157513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8506.

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

The square root of 3157513 is about 1776.9392223709. The cubic root of 3157513 is about 146.7061710620.

The spelling of 3157513 in words is "three million, one hundred fifty-seven thousand, five hundred thirteen".