22124657 has 4 divisors (see below), whose sum is σ = 22203120. Its totient is φ = 22046196.

The previous prime is 22124653. The next prime is 22124677. The reversal of 22124657 is 75642122.

It is a happy number.

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 22124657 - 2² = 22124653 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22124653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38807 + ... + 39372.

It is an arithmetic number, because the mean of its divisors is an integer number (5550780).

Almost surely, 2^22124657 is an apocalyptic number.

It is an amenable number.

22124657 is a deficient number, since it is larger than the sum of its proper divisors (78463).

22124657 is an equidigital number, since it uses as much as digits as its factorization.

22124657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78462.

The product of its digits is 6720, while the sum is 29.

The square root of 22124657 is about 4703.6854699267. The cubic root of 22124657 is about 280.7321696712.

Adding to 22124657 its reverse (75642122), we get a palindrome (97766779).

The spelling of 22124657 in words is "twenty-two million, one hundred twenty-four thousand, six hundred fifty-seven".