22415149 has 4 divisors (see below), whose sum is σ = 22461664. Its totient is φ = 22368636.

The previous prime is 22415143. The next prime is 22415177. The reversal of 22415149 is 94151422.

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 22415149 - 2⁷ = 22415021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22415143) 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, 22527 + ... + 23500.

It is an arithmetic number, because the mean of its divisors is an integer number (5615416).

Almost surely, 2^22415149 is an apocalyptic number.

It is an amenable number.

22415149 is a deficient number, since it is larger than the sum of its proper divisors (46515).

22415149 is an equidigital number, since it uses as much as digits as its factorization.

22415149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46514.

The product of its digits is 2880, while the sum is 28.

The square root of 22415149 is about 4734.4639612104. The cubic root of 22415149 is about 281.9554823008.

The spelling of 22415149 in words is "twenty-two million, four hundred fifteen thousand, one hundred forty-nine".