2581983 has 8 divisors (see below), whose sum is σ = 3825200. Its totient is φ = 1721304.

The previous prime is 2581973. The next prime is 2581991. The reversal of 2581983 is 3891852.

It is not a de Polignac number, because 2581983 - 2⁵ = 2581951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2581913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47788 + ... + 47841.

It is an arithmetic number, because the mean of its divisors is an integer number (478150).

2^2581983 is an apocalyptic number.

2581983 is a deficient number, since it is larger than the sum of its proper divisors (1243217).

2581983 is an equidigital number, since it uses as much as digits as its factorization.

2581983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95638 (or 95632 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 2581983 is about 1606.8550027927. The cubic root of 2581983 is about 137.1885269216.

The spelling of 2581983 in words is "two million, five hundred eighty-one thousand, nine hundred eighty-three".