22154995 has 8 divisors (see below), whose sum is σ = 28149984. Its totient is φ = 16681344.

The previous prime is 22154981. The next prime is 22154999. The reversal of 22154995 is 59945122.

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 22154995 - 2⁵ = 22154963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22154999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130239 + ... + 130408.

It is an arithmetic number, because the mean of its divisors is an integer number (3518748).

Almost surely, 2^22154995 is an apocalyptic number.

22154995 is a deficient number, since it is larger than the sum of its proper divisors (5994989).

22154995 is a wasteful number, since it uses less digits than its factorization.

22154995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260669.

The product of its digits is 32400, while the sum is 37.

The square root of 22154995 is about 4706.9092831709. The cubic root of 22154995 is about 280.8604272177.

The spelling of 22154995 in words is "twenty-two million, one hundred fifty-four thousand, nine hundred ninety-five".