22791553 has 4 divisors (see below), whose sum is σ = 22882608. Its totient is φ = 22700500.

The previous prime is 22791529. The next prime is 22791557. The reversal of 22791553 is 35519722.

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 22791553 - 2¹³ = 22783361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22791557) 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, 45151 + ... + 45652.

It is an arithmetic number, because the mean of its divisors is an integer number (5720652).

Almost surely, 2^22791553 is an apocalyptic number.

It is an amenable number.

22791553 is a deficient number, since it is larger than the sum of its proper divisors (91055).

22791553 is an equidigital number, since it uses as much as digits as its factorization.

22791553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91054.

The product of its digits is 18900, while the sum is 34.

The square root of 22791553 is about 4774.0499578450. The cubic root of 22791553 is about 283.5249654779.

The spelling of 22791553 in words is "twenty-two million, seven hundred ninety-one thousand, five hundred fifty-three".