2580551 has 4 divisors (see below), whose sum is σ = 2584704. Its totient is φ = 2576400.

The previous prime is 2580547. The next prime is 2580563. The reversal of 2580551 is 1550852.

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 2580551 - 2² = 2580547 is a prime.

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 2580551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2580511) 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, 935 + ... + 2456.

It is an arithmetic number, because the mean of its divisors is an integer number (646176).

2^2580551 is an apocalyptic number.

2580551 is a deficient number, since it is larger than the sum of its proper divisors (4153).

2580551 is an equidigital number, since it uses as much as digits as its factorization.

2580551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4152.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 2580551 is about 1606.4093500724. The cubic root of 2580551 is about 137.1631600749.

The spelling of 2580551 in words is "two million, five hundred eighty thousand, five hundred fifty-one".