2564499 has 16 divisors (see below), whose sum is σ = 4043520. Its totient is φ = 1414560.

The previous prime is 2564489. The next prime is 2564519. The reversal of 2564499 is 9944652.

It is not a de Polignac number, because 2564499 - 2¹¹ = 2562451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2564459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1497 + ... + 2714.

It is an arithmetic number, because the mean of its divisors is an integer number (252720).

2^2564499 is an apocalyptic number.

2564499 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

2564499 is a deficient number, since it is larger than the sum of its proper divisors (1479021).

2564499 is a wasteful number, since it uses less digits than its factorization.

2564499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4250.

The product of its digits is 77760, while the sum is 39.

The square root of 2564499 is about 1601.4053203359. The cubic root of 2564499 is about 136.8781661451.

The spelling of 2564499 in words is "two million, five hundred sixty-four thousand, four hundred ninety-nine".