22501379 has 4 divisors (see below), whose sum is σ = 22513176. Its totient is φ = 22489584.

The previous prime is 22501343. The next prime is 22501403. The reversal of 22501379 is 97310522.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 97310522 = 2 ⋅48655261.

It is a cyclic number.

It is not a de Polignac number, because 22501379 - 2²⁴ = 5724163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22501679) 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, 2309 + ... + 7094.

It is an arithmetic number, because the mean of its divisors is an integer number (5628294).

Almost surely, 2^22501379 is an apocalyptic number.

22501379 is a deficient number, since it is larger than the sum of its proper divisors (11797).

22501379 is an equidigital number, since it uses as much as digits as its factorization.

22501379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11796.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 22501379 is about 4743.5618473885. The cubic root of 22501379 is about 282.3165760517.

The spelling of 22501379 in words is "twenty-two million, five hundred one thousand, three hundred seventy-nine".