22247157 has 16 divisors (see below), whose sum is σ = 31324160. Its totient is φ = 14005872.

The previous prime is 22247153. The next prime is 22247161. The reversal of 22247157 is 75174222.

It is an interprime number because it is at equal distance from previous prime (22247153) and next prime (22247161).

It is not a de Polignac number, because 22247157 - 2² = 22247153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22247153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34278 + ... + 34920.

It is an arithmetic number, because the mean of its divisors is an integer number (1957760).

Almost surely, 2^22247157 is an apocalyptic number.

It is an amenable number.

22247157 is a deficient number, since it is larger than the sum of its proper divisors (9077003).

22247157 is a wasteful number, since it uses less digits than its factorization.

22247157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272.

The product of its digits is 7840, while the sum is 30.

The square root of 22247157 is about 4716.6891990039. The cubic root of 22247157 is about 281.2493364923.

The spelling of 22247157 in words is "twenty-two million, two hundred forty-seven thousand, one hundred fifty-seven".