2584981 has 4 divisors (see below), whose sum is σ = 2954272. Its totient is φ = 2215692.

The previous prime is 2584979. The next prime is 2584987. The reversal of 2584981 is 1894852.

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.

It is a cyclic number.

It is not a de Polignac number, because 2584981 - 2¹ = 2584979 is a prime.

It is a super-2 number, since 2×2584981² = 13364253540722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2584981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2584987) 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, 184635 + ... + 184648.

It is an arithmetic number, because the mean of its divisors is an integer number (738568).

2^2584981 is an apocalyptic number.

It is an amenable number.

2584981 is a deficient number, since it is larger than the sum of its proper divisors (369291).

2584981 is an equidigital number, since it uses as much as digits as its factorization.

2584981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369290.

The product of its digits is 23040, while the sum is 37.

The square root of 2584981 is about 1607.7876103516. The cubic root of 2584981 is about 137.2416039712.

The spelling of 2584981 in words is "two million, five hundred eighty-four thousand, nine hundred eighty-one".