22475557 has 4 divisors (see below), whose sum is σ = 24204460. Its totient is φ = 20746656.

The previous prime is 22475521. The next prime is 22475561. The reversal of 22475557 is 75557422.

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 6081156 + 16394401 = 2466^2 + 4049^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22475557 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 (22475567) 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, 864432 + ... + 864457.

It is an arithmetic number, because the mean of its divisors is an integer number (6051115).

Almost surely, 2^22475557 is an apocalyptic number.

It is an amenable number.

22475557 is a deficient number, since it is larger than the sum of its proper divisors (1728903).

22475557 is a wasteful number, since it uses less digits than its factorization.

22475557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728902.

The product of its digits is 98000, while the sum is 37.

The square root of 22475557 is about 4740.8392716902. The cubic root of 22475557 is about 282.2085416508.

It can be divided in two parts, 22475 and 557, that added together give a palindrome (23032).

The spelling of 22475557 in words is "twenty-two million, four hundred seventy-five thousand, five hundred fifty-seven".