22401655 has 16 divisors (see below), whose sum is σ = 28283904. Its totient is φ = 16999840.

The previous prime is 22401647. The next prime is 22401679. The reversal of 22401655 is 55610422.

It is not a de Polignac number, because 22401655 - 2³ = 22401647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14322 + ... + 15808.

It is an arithmetic number, because the mean of its divisors is an integer number (1767744).

Almost surely, 2^22401655 is an apocalyptic number.

22401655 is a deficient number, since it is larger than the sum of its proper divisors (5882249).

22401655 is a wasteful number, since it uses less digits than its factorization.

22401655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 22401655 is about 4733.0386645368. The cubic root of 22401655 is about 281.8988915398.

The spelling of 22401655 in words is "twenty-two million, four hundred one thousand, six hundred fifty-five".