22427497 has 4 divisors (see below), whose sum is σ = 22439056. Its totient is φ = 22415940.

The previous prime is 22427491. The next prime is 22427501. The reversal of 22427497 is 79472422.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 79472422 = 2 ⋅39736211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22427497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22427491) 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, 2079 + ... + 7012.

It is an arithmetic number, because the mean of its divisors is an integer number (5609764).

Almost surely, 2^22427497 is an apocalyptic number.

It is an amenable number.

22427497 is a deficient number, since it is larger than the sum of its proper divisors (11559).

22427497 is an equidigital number, since it uses as much as digits as its factorization.

22427497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11558.

The product of its digits is 56448, while the sum is 37.

The square root of 22427497 is about 4735.7678363704. The cubic root of 22427497 is about 282.0072471018.

The spelling of 22427497 in words is "twenty-two million, four hundred twenty-seven thousand, four hundred ninety-seven".