22474157 has 4 divisors (see below), whose sum is σ = 22758720. Its totient is φ = 22189596.

The previous prime is 22474121. The next prime is 22474171. The reversal of 22474157 is 75147422.

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 22474157 - 2⁸ = 22473901 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 (22477157) 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, 142163 + ... + 142320.

It is an arithmetic number, because the mean of its divisors is an integer number (5689680).

Almost surely, 2^22474157 is an apocalyptic number.

It is an amenable number.

22474157 is a deficient number, since it is larger than the sum of its proper divisors (284563).

22474157 is an equidigital number, since it uses as much as digits as its factorization.

22474157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284562.

The product of its digits is 15680, while the sum is 32.

The square root of 22474157 is about 4740.6916162096. The cubic root of 22474157 is about 282.2026819493.

It can be divided in two parts, 2247415 and 7, that added together give a palindrome (2247422).

The spelling of 22474157 in words is "twenty-two million, four hundred seventy-four thousand, one hundred fifty-seven".