3157457 has 4 divisors (see below), whose sum is σ = 3171840. Its totient is φ = 3143076.

The previous prime is 3157411. The next prime is 3157471. The reversal of 3157457 is 7547513.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7547513 = 71 ⋅106303.

It is a cyclic number.

It is not a de Polignac number, because 3157457 - 2¹² = 3153361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3157487) 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, 6857 + ... + 7302.

It is an arithmetic number, because the mean of its divisors is an integer number (792960).

Almost surely, 2^3157457 is an apocalyptic number.

It is an amenable number.

3157457 is a deficient number, since it is larger than the sum of its proper divisors (14383).

3157457 is a wasteful number, since it uses less digits than its factorization.

3157457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14382.

The product of its digits is 14700, while the sum is 32.

The square root of 3157457 is about 1776.9234648684. The cubic root of 3157457 is about 146.7053037556.

The spelling of 3157457 in words is "three million, one hundred fifty-seven thousand, four hundred fifty-seven".