2572621 has 2 divisors, whose sum is σ = 2572622. Its totient is φ = 2572620.

The previous prime is 2572613. The next prime is 2572649. The reversal of 2572621 is 1262752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2528100 + 44521 = 1590^2 + 211^2 .

It is a cyclic number.

It is not a de Polignac number, because 2572621 - 2³ = 2572613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2572651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1286310 + 1286311.

It is an arithmetic number, because the mean of its divisors is an integer number (1286311).

2^2572621 is an apocalyptic number.

It is an amenable number.

2572621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2572621 is an equidigital number, since it uses as much as digits as its factorization.

2572621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 25.

The square root of 2572621 is about 1603.9392133120. The cubic root of 2572621 is about 137.0225157019.

The spelling of 2572621 in words is "two million, five hundred seventy-two thousand, six hundred twenty-one".