3055981 has 4 divisors (see below), whose sum is σ = 3060000. Its totient is φ = 3051964.

The previous prime is 3055973. The next prime is 3056041. The reversal of 3055981 is 1895503.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1895503 = 151 ⋅12553.

It is a cyclic number.

It is not a de Polignac number, because 3055981 - 2³ = 3055973 is a prime.

It is a super-2 number, since 2×3055981² = 18678039744722, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3055901) 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, 481 + ... + 2518.

It is an arithmetic number, because the mean of its divisors is an integer number (765000).

Almost surely, 2^3055981 is an apocalyptic number.

It is an amenable number.

3055981 is a deficient number, since it is larger than the sum of its proper divisors (4019).

3055981 is a wasteful number, since it uses less digits than its factorization.

3055981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4018.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 3055981 is about 1748.1364363230. The cubic root of 3055981 is about 145.1165293937.

The spelling of 3055981 in words is "three million, fifty-five thousand, nine hundred eighty-one".