2564129 has 4 divisors (see below), whose sum is σ = 2568384. Its totient is φ = 2559876.

The previous prime is 2564123. The next prime is 2564143. The reversal of 2564129 is 9214652.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2564129 - 2¹⁶ = 2498593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2564123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1037 + ... + 2490.

It is an arithmetic number, because the mean of its divisors is an integer number (642096).

2^2564129 is an apocalyptic number.

It is an amenable number.

2564129 is a deficient number, since it is larger than the sum of its proper divisors (4255).

2564129 is an equidigital number, since it uses as much as digits as its factorization.

2564129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4254.

The product of its digits is 4320, while the sum is 29.

The square root of 2564129 is about 1601.2897926359. The cubic root of 2564129 is about 136.8715830065.

The spelling of 2564129 in words is "two million, five hundred sixty-four thousand, one hundred twenty-nine".