2562391 has 8 divisors (see below), whose sum is σ = 2812320. Its totient is φ = 2320032.

The previous prime is 2562389. The next prime is 2562403. The reversal of 2562391 is 1932652.

2562391 = 651² + 652² + ... + 656².

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2562391 - 2¹ = 2562389 is a prime.

It is a Duffinian number.

2562391 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2562191) 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, 1171 + ... + 2548.

It is an arithmetic number, because the mean of its divisors is an integer number (351540).

2^2562391 is an apocalyptic number.

2562391 is a deficient number, since it is larger than the sum of its proper divisors (249929).

2562391 is a wasteful number, since it uses less digits than its factorization.

2562391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3785.

The product of its digits is 3240, while the sum is 28.

The square root of 2562391 is about 1600.7470131161. The cubic root of 2562391 is about 136.8406515703.

The spelling of 2562391 in words is "two million, five hundred sixty-two thousand, three hundred ninety-one".