22154899 has 8 divisors (see below), whose sum is σ = 23999472. Its totient is φ = 20330400.

The previous prime is 22154887. The next prime is 22154929. The reversal of 22154899 is 99845122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22154899 - 2⁷ = 22154771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22154809) 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 7 ways as a sum of consecutive naturals, for example, 2677 + ... + 7174.

It is an arithmetic number, because the mean of its divisors is an integer number (2999934).

It is a vampire number, since it can be written as 2249 ⋅ 9851 (with its own digits).

Almost surely, 2^22154899 is an apocalyptic number.

22154899 is a deficient number, since it is larger than the sum of its proper divisors (1844573).

22154899 is a wasteful number, since it uses less digits than its factorization.

22154899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10037.

The product of its digits is 51840, while the sum is 40.

The square root of 22154899 is about 4706.8990853852. The cubic root of 22154899 is about 280.8600215508.

The spelling of 22154899 in words is "twenty-two million, one hundred fifty-four thousand, eight hundred ninety-nine".