2564512 has 12 divisors (see below), whose sum is σ = 5048946. Its totient is φ = 1282240.

The previous prime is 2564489. The next prime is 2564519. The reversal of 2564512 is 2154652.

It can be written as a sum of positive squares in only one way, i.e., 2298256 + 266256 = 1516^2 + 516^2 .

It is not an unprimeable number, because it can be changed into a prime (2564519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40039 + ... + 40102.

2^2564512 is an apocalyptic number.

It is an amenable number.

2564512 is a deficient number, since it is larger than the sum of its proper divisors (2484434).

2564512 is an equidigital number, since it uses as much as digits as its factorization.

2564512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80151 (or 80143 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 2564512 is about 1601.4093792657. The cubic root of 2564512 is about 136.8783974331.

The spelling of 2564512 in words is "two million, five hundred sixty-four thousand, five hundred twelve".