2055931 has 4 divisors (see below), whose sum is σ = 2059992. Its totient is φ = 2051872.

The previous prime is 2055917. The next prime is 2055953. The reversal of 2055931 is 1395502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2055931 - 2¹⁵ = 2023163 is a prime.

It is a super-2 number, since 2×2055931² = 8453704553522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2055896 and 2055905.

It is not an unprimeable number, because it can be changed into a prime (2055961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1141 + ... + 2326.

It is an arithmetic number, because the mean of its divisors is an integer number (514998).

2^2055931 is an apocalyptic number.

2055931 is a deficient number, since it is larger than the sum of its proper divisors (4061).

2055931 is an equidigital number, since it uses as much as digits as its factorization.

2055931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4060.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 2055931 is about 1433.8518054527. The cubic root of 2055931 is about 127.1558011001.

The spelling of 2055931 in words is "two million, fifty-five thousand, nine hundred thirty-one".