42560553221 has 4 divisors (see below), whose sum is σ = 43143574572. Its totient is φ = 41977531872.

The previous prime is 42560553197. The next prime is 42560553227. The reversal of 42560553221 is 12235506524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20731968196 + 21828585025 = 143986^2 + 147745^2 .

It is a cyclic number.

It is not a de Polignac number, because 42560553221 - 2⁶ = 42560553157 is a prime.

It is a super-2 number, since 2×42560553221² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42560553227) 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, 291510566 + ... + 291510711.

It is an arithmetic number, because the mean of its divisors is an integer number (10785893643).

Almost surely, 2^42560553221 is an apocalyptic number.

It is an amenable number.

42560553221 is a deficient number, since it is larger than the sum of its proper divisors (583021351).

42560553221 is an equidigital number, since it uses as much as digits as its factorization.

42560553221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583021350.

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 42560553221 in words is "forty-two billion, five hundred sixty million, five hundred fifty-three thousand, two hundred twenty-one".