2563494 has 8 divisors (see below), whose sum is σ = 5127000. Its totient is φ = 854496.

The previous prime is 2563493. The next prime is 2563507. The reversal of 2563494 is 4943652.

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

2563494 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2563493) 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, 213619 + ... + 213630.

It is an arithmetic number, because the mean of its divisors is an integer number (640875).

2^2563494 is an apocalyptic number.

2563494 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2563494 is a wasteful number, since it uses less digits than its factorization.

2563494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427254.

The product of its digits is 25920, while the sum is 33.

The square root of 2563494 is about 1601.0915026943. The cubic root of 2563494 is about 136.8602834410.

The spelling of 2563494 in words is "two million, five hundred sixty-three thousand, four hundred ninety-four".