22253819 has 4 divisors (see below), whose sum is σ = 25432944. Its totient is φ = 19074696.

The previous prime is 22253813. The next prime is 22253843. The reversal of 22253819 is 91835222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22253819 - 2²⁰ = 21205243 is a prime.

It is a super-2 number, since 2×22253819² = 990464920169522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22253813) 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, 1589552 + ... + 1589565.

It is an arithmetic number, because the mean of its divisors is an integer number (6358236).

Almost surely, 2^22253819 is an apocalyptic number.

22253819 is a deficient number, since it is larger than the sum of its proper divisors (3179125).

22253819 is an equidigital number, since it uses as much as digits as its factorization.

22253819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3179124.

The product of its digits is 8640, while the sum is 32.

The square root of 22253819 is about 4717.3953618496. The cubic root of 22253819 is about 281.2774074361.

The spelling of 22253819 in words is "twenty-two million, two hundred fifty-three thousand, eight hundred nineteen".