2564081 has 8 divisors (see below), whose sum is σ = 2808960. Its totient is φ = 2326032.

The previous prime is 2564077. The next prime is 2564101. The reversal of 2564081 is 1804652.

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

It is a cyclic number.

It is not a de Polignac number, because 2564081 - 2² = 2564077 is a prime.

It is a super-2 number, since 2×2564081² = 13149022749122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2564081.

It is not an unprimeable number, because it can be changed into a prime (2564011) 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, 905 + ... + 2438.

It is an arithmetic number, because the mean of its divisors is an integer number (351120).

2^2564081 is an apocalyptic number.

It is an amenable number.

2564081 is a deficient number, since it is larger than the sum of its proper divisors (244879).

2564081 is a wasteful number, since it uses less digits than its factorization.

2564081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3415.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 2564081 is about 1601.2748046478. The cubic root of 2564081 is about 136.8707289313.

The spelling of 2564081 in words is "two million, five hundred sixty-four thousand, eighty-one".