22485217 has 4 divisors (see below), whose sum is σ = 22769920. Its totient is φ = 22200516.

The previous prime is 22485193. The next prime is 22485251. The reversal of 22485217 is 71258422.

It is a happy number.

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 an emirpimes, since its reverse is a distinct semiprime: 71258422 = 2 ⋅35629211.

It is a cyclic number.

It is not a de Polignac number, because 22485217 - 2¹¹ = 22483169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22485017) 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, 142233 + ... + 142390.

It is an arithmetic number, because the mean of its divisors is an integer number (5692480).

Almost surely, 2^22485217 is an apocalyptic number.

It is an amenable number.

22485217 is a deficient number, since it is larger than the sum of its proper divisors (284703).

22485217 is an equidigital number, since it uses as much as digits as its factorization.

22485217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284702.

The product of its digits is 8960, while the sum is 31.

The square root of 22485217 is about 4741.8579691931. The cubic root of 22485217 is about 282.2489669603.

The spelling of 22485217 in words is "twenty-two million, four hundred eighty-five thousand, two hundred seventeen".