2562106021 has 4 divisors (see below), whose sum is σ = 2562276544. Its totient is φ = 2561935500.

The previous prime is 2562106009. The next prime is 2562106049. The reversal of 2562106021 is 1206012652.

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 2562106021 - 2⁹ = 2562105509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2562103021) 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, 60285 + ... + 93586.

It is an arithmetic number, because the mean of its divisors is an integer number (640569136).

Almost surely, 2^2562106021 is an apocalyptic number.

It is an amenable number.

2562106021 is a deficient number, since it is larger than the sum of its proper divisors (170523).

2562106021 is a wasteful number, since it uses less digits than its factorization.

2562106021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170522.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2562106021 is about 50617.2502315169. The cubic root of 2562106021 is about 1368.3557842336.

Adding to 2562106021 its reverse (1206012652), we get a palindrome (3768118673).

The spelling of 2562106021 in words is "two billion, five hundred sixty-two million, one hundred six thousand, twenty-one".