22521424553 has 4 divisors (see below), whose sum is σ = 22524360528. Its totient is φ = 22518488580.

The previous prime is 22521424547. The next prime is 22521424571. The reversal of 22521424553 is 35542412522.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-22521424553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22521424753) 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, 1456451 + ... + 1471832.

It is an arithmetic number, because the mean of its divisors is an integer number (5631090132).

Almost surely, 2^22521424553 is an apocalyptic number.

It is an amenable number.

22521424553 is a deficient number, since it is larger than the sum of its proper divisors (2935975).

22521424553 is an equidigital number, since it uses as much as digits as its factorization.

22521424553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2935974.

The product of its digits is 96000, while the sum is 35.

The spelling of 22521424553 in words is "twenty-two billion, five hundred twenty-one million, four hundred twenty-four thousand, five hundred fifty-three".