22458155 has 4 divisors (see below), whose sum is σ = 26949792. Its totient is φ = 17966520.

The previous prime is 22458127. The next prime is 22458193. The reversal of 22458155 is 55185422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55185422 = 2 ⋅27592711.

It is not a de Polignac number, because 22458155 - 2⁸ = 22457899 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2245811 + ... + 2245820.

It is an arithmetic number, because the mean of its divisors is an integer number (6737448).

Almost surely, 2^22458155 is an apocalyptic number.

22458155 is a deficient number, since it is larger than the sum of its proper divisors (4491637).

22458155 is an equidigital number, since it uses as much as digits as its factorization.

22458155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4491636.

The product of its digits is 16000, while the sum is 32.

The square root of 22458155 is about 4739.0035872533. The cubic root of 22458155 is about 282.1356882683.

The spelling of 22458155 in words is "twenty-two million, four hundred fifty-eight thousand, one hundred fifty-five".