3155121 has 12 divisors (see below), whose sum is σ = 4797520. Its totient is φ = 1992600.

The previous prime is 3155077. The next prime is 3155137. The reversal of 3155121 is 1215513.

It is not a de Polignac number, because 3155121 - 2⁶ = 3155057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3155094 and 3155103.

It is not an unprimeable number, because it can be changed into a prime (3155021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9055 + ... + 9396.

Almost surely, 2^3155121 is an apocalyptic number.

It is an amenable number.

3155121 is a deficient number, since it is larger than the sum of its proper divisors (1642399).

3155121 is a wasteful number, since it uses less digits than its factorization.

3155121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18476 (or 18473 counting only the distinct ones).

The product of its digits is 150, while the sum is 18.

The square root of 3155121 is about 1776.2660273732. The cubic root of 3155121 is about 146.6691155468.

It can be divided in two parts, 315512 and 1, that added together give a palindrome (315513).

The spelling of 3155121 in words is "three million, one hundred fifty-five thousand, one hundred twenty-one".