22572557 has 8 divisors (see below), whose sum is σ = 26629632. Its totient is φ = 18723600.

The previous prime is 22572497. The next prime is 22572581. The reversal of 22572557 is 75527522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22572557 - 2⁶ = 22572493 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 (22572587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51794 + ... + 52227.

It is an arithmetic number, because the mean of its divisors is an integer number (3328704).

Almost surely, 2^22572557 is an apocalyptic number.

It is an amenable number.

22572557 is a deficient number, since it is larger than the sum of its proper divisors (4057075).

22572557 is a wasteful number, since it uses less digits than its factorization.

22572557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104059.

The product of its digits is 49000, while the sum is 35.

The square root of 22572557 is about 4751.0585136367. The cubic root of 22572557 is about 282.6139441677.

The spelling of 22572557 in words is "twenty-two million, five hundred seventy-two thousand, five hundred fifty-seven".