2572561 has 8 divisors (see below), whose sum is σ = 2724480. Its totient is φ = 2424912.

The previous prime is 2572529. The next prime is 2572589. The reversal of 2572561 is 1652752.

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 2572561 - 2⁵ = 2572529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2572261) 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, 216 + ... + 2278.

It is an arithmetic number, because the mean of its divisors is an integer number (340560).

2^2572561 is an apocalyptic number.

It is an amenable number.

2572561 is a deficient number, since it is larger than the sum of its proper divisors (151919).

2572561 is a wasteful number, since it uses less digits than its factorization.

2572561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135.

The product of its digits is 4200, while the sum is 28.

The square root of 2572561 is about 1603.9205092523. The cubic root of 2572561 is about 137.0214504570.

The spelling of 2572561 in words is "two million, five hundred seventy-two thousand, five hundred sixty-one".