3115261 has 2 divisors, whose sum is σ = 3115262. Its totient is φ = 3115260.

The previous prime is 3115253. The next prime is 3115271. The reversal of 3115261 is 1625113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3115225 + 36 = 1765^2 + 6^2 .

It is a cyclic number.

It is not a de Polignac number, because 3115261 - 2³ = 3115253 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3115201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1557630 + 1557631.

It is an arithmetic number, because the mean of its divisors is an integer number (1557631).

Almost surely, 2^3115261 is an apocalyptic number.

It is an amenable number.

3115261 is a deficient number, since it is larger than the sum of its proper divisors (1).

3115261 is an equidigital number, since it uses as much as digits as its factorization.

3115261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 180, while the sum is 19.

The square root of 3115261 is about 1765.0101982708. The cubic root of 3115261 is about 146.0488514826.

It can be divided in two parts, 31152 and 61, that added together give a palindrome (31213).

The spelling of 3115261 in words is "three million, one hundred fifteen thousand, two hundred sixty-one".