22154249 has 16 divisors (see below), whose sum is σ = 24675840. Its totient is φ = 19761600.

The previous prime is 22154233. The next prime is 22154263. The reversal of 22154249 is 94245122.

It is a cyclic number.

It is not a de Polignac number, because 22154249 - 2⁴ = 22154233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22154269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61532 + ... + 61890.

It is an arithmetic number, because the mean of its divisors is an integer number (1542240).

Almost surely, 2^22154249 is an apocalyptic number.

It is an amenable number.

22154249 is a deficient number, since it is larger than the sum of its proper divisors (2521591).

22154249 is a wasteful number, since it uses less digits than its factorization.

22154249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520.

The product of its digits is 5760, while the sum is 29.

The square root of 22154249 is about 4706.8300372969. The cubic root of 22154249 is about 280.8572748175.

The spelling of 22154249 in words is "twenty-two million, one hundred fifty-four thousand, two hundred forty-nine".