2562216621 has 4 divisors (see below), whose sum is σ = 3416288832. Its totient is φ = 1708144412.

The previous prime is 2562216529. The next prime is 2562216623. The reversal of 2562216621 is 1266122652.

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 2562216621 - 2⁹ = 2562216109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2562216623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427036101 + ... + 427036106.

It is an arithmetic number, because the mean of its divisors is an integer number (854072208).

Almost surely, 2^2562216621 is an apocalyptic number.

It is an amenable number.

2562216621 is a deficient number, since it is larger than the sum of its proper divisors (854072211).

2562216621 is an equidigital number, since it uses as much as digits as its factorization.

2562216621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854072210.

The product of its digits is 17280, while the sum is 33.

The square root of 2562216621 is about 50618.3427326498. The cubic root of 2562216621 is about 1368.3754735011.

The spelling of 2562216621 in words is "two billion, five hundred sixty-two million, two hundred sixteen thousand, six hundred twenty-one".