3135561 has 16 divisors (see below), whose sum is σ = 4912320. Its totient is φ = 1753920.

The previous prime is 3135553. The next prime is 3135571. The reversal of 3135561 is 1655313.

It is not a de Polignac number, because 3135561 - 2³ = 3135553 is a prime.

It is a Curzon number.

3135561 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3135571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3226 + ... + 4083.

It is an arithmetic number, because the mean of its divisors is an integer number (307020).

Almost surely, 2^3135561 is an apocalyptic number.

It is an amenable number.

3135561 is a deficient number, since it is larger than the sum of its proper divisors (1776759).

3135561 is a wasteful number, since it uses less digits than its factorization.

3135561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7336.

The product of its digits is 1350, while the sum is 24.

The square root of 3135561 is about 1770.7515353657. The cubic root of 3135561 is about 146.3653980005.

The spelling of 3135561 in words is "three million, one hundred thirty-five thousand, five hundred sixty-one".