3157261 has 4 divisors (see below), whose sum is σ = 3164832. Its totient is φ = 3149692.

The previous prime is 3157243. The next prime is 3157277. The reversal of 3157261 is 1627513.

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.

It is a cyclic number.

It is not a de Polignac number, because 3157261 - 2⁵ = 3157229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3157061) 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, 3121 + ... + 4006.

It is an arithmetic number, because the mean of its divisors is an integer number (791208).

Almost surely, 2^3157261 is an apocalyptic number.

It is an amenable number.

3157261 is a deficient number, since it is larger than the sum of its proper divisors (7571).

3157261 is an equidigital number, since it uses as much as digits as its factorization.

3157261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7570.

The product of its digits is 1260, while the sum is 25.

The square root of 3157261 is about 1776.8683125094. The cubic root of 3157261 is about 146.7022681022.

The spelling of 3157261 in words is "three million, one hundred fifty-seven thousand, two hundred sixty-one".