3155081 has 4 divisors (see below), whose sum is σ = 3340692. Its totient is φ = 2969472.

The previous prime is 3155077. The next prime is 3155137. The reversal of 3155081 is 1805513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1805513 = 19 ⋅95027.

It can be written as a sum of positive squares in 2 ways, for example, as 1488400 + 1666681 = 1220^2 + 1291^2 .

It is a cyclic number.

It is not a de Polignac number, because 3155081 - 2² = 3155077 is a prime.

It is a super-2 number, since 2×3155081² = 19909072233122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

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

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92780 + ... + 92813.

It is an arithmetic number, because the mean of its divisors is an integer number (835173).

Almost surely, 2^3155081 is an apocalyptic number.

It is an amenable number.

3155081 is a deficient number, since it is larger than the sum of its proper divisors (185611).

3155081 is a wasteful number, since it uses less digits than its factorization.

3155081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185610.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 3155081 is about 1776.2547677628. The cubic root of 3155081 is about 146.6684957302.

The spelling of 3155081 in words is "three million, one hundred fifty-five thousand, eighty-one".