22972057 has 4 divisors (see below), whose sum is σ = 23230260. Its totient is φ = 22713856.

The previous prime is 22972003. The next prime is 22972067. The reversal of 22972057 is 75027922.

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 16232841 + 6739216 = 4029^2 + 2596^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22972057 is a prime.

It is a super-2 number, since 2×22972057² = 1055430805622498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22972067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128968 + ... + 129145.

It is an arithmetic number, because the mean of its divisors is an integer number (5807565).

Almost surely, 2^22972057 is an apocalyptic number.

It is an amenable number.

22972057 is a deficient number, since it is larger than the sum of its proper divisors (258203).

22972057 is an equidigital number, since it uses as much as digits as its factorization.

22972057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258202.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 22972057 is about 4792.9173787997. The cubic root of 22972057 is about 284.2714829442.

Adding to 22972057 its reverse (75027922), we get a palindrome (97999979).

The spelling of 22972057 in words is "twenty-two million, nine hundred seventy-two thousand, fifty-seven".