22957147 has 4 divisors (see below), whose sum is σ = 22966920. Its totient is φ = 22947376.

The previous prime is 22957139. The next prime is 22957159. The reversal of 22957147 is 74175922.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 74175922 = 2 ⋅37087961.

It is a cyclic number.

It is not a de Polignac number, because 22957147 - 2³ = 22957139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22957177) 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, 1008 + ... + 6850.

It is an arithmetic number, because the mean of its divisors is an integer number (5741730).

Almost surely, 2^22957147 is an apocalyptic number.

22957147 is a deficient number, since it is larger than the sum of its proper divisors (9773).

22957147 is an equidigital number, since it uses as much as digits as its factorization.

22957147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9772.

The product of its digits is 35280, while the sum is 37.

The square root of 22957147 is about 4791.3617062376. The cubic root of 22957147 is about 284.2099675542.

It can be divided in two parts, 22957 and 147, that added together give a square (23104 = 152²).

The spelling of 22957147 in words is "twenty-two million, nine hundred fifty-seven thousand, one hundred forty-seven".