2583981 has 40 divisors (see below), whose sum is σ = 4297920. Its totient is φ = 1539648.

The previous prime is 2583979. The next prime is 2584007. The reversal of 2583981 is 1893852.

It is not a de Polignac number, because 2583981 - 2¹ = 2583979 is a prime.

It is a super-2 number, since 2×2583981² = 13353915616722, which contains 22 as substring.

It is an Ulam number.

It is a zygodrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2583181) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 35361 + ... + 35433.

It is an arithmetic number, because the mean of its divisors is an integer number (107448).

2^2583981 is an apocalyptic number.

It is an amenable number.

2583981 is a deficient number, since it is larger than the sum of its proper divisors (1713939).

2583981 is a wasteful number, since it uses less digits than its factorization.

2583981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 118 counting only the distinct ones).

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

The square root of 2583981 is about 1607.4765939198. The cubic root of 2583981 is about 137.2239043821.

The spelling of 2583981 in words is "two million, five hundred eighty-three thousand, nine hundred eighty-one".