22412557 has 4 divisors (see below), whose sum is σ = 23387040. Its totient is φ = 21438076.

The previous prime is 22412549. The next prime is 22412567. The reversal of 22412557 is 75521422.

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 22412557 - 2³ = 22412549 is a prime.

It is a super-2 number, since 2×22412557² = 1004645422556498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22412567) 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, 487207 + ... + 487252.

It is an arithmetic number, because the mean of its divisors is an integer number (5846760).

Almost surely, 2^22412557 is an apocalyptic number.

It is an amenable number.

22412557 is a deficient number, since it is larger than the sum of its proper divisors (974483).

22412557 is an equidigital number, since it uses as much as digits as its factorization.

22412557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974482.

The product of its digits is 5600, while the sum is 28.

The square root of 22412557 is about 4734.1902158659. The cubic root of 22412557 is about 281.9446138061.

Adding to 22412557 its reverse (75521422), we get a palindrome (97933979).

The spelling of 22412557 in words is "twenty-two million, four hundred twelve thousand, five hundred fifty-seven".