22455861 has 8 divisors (see below), whose sum is σ = 31702464. Its totient is φ = 14089920.

The previous prime is 22455821. The next prime is 22455863. The reversal of 22455861 is 16855422.

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

It is a de Polignac number, because none of the positive numbers 2^k-22455861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22455863) 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, 220105 + ... + 220206.

It is an arithmetic number, because the mean of its divisors is an integer number (3962808).

Almost surely, 2^22455861 is an apocalyptic number.

It is an amenable number.

22455861 is a deficient number, since it is larger than the sum of its proper divisors (9246603).

22455861 is a wasteful number, since it uses less digits than its factorization.

22455861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440331.

The product of its digits is 19200, while the sum is 33.

The square root of 22455861 is about 4738.7615470711. The cubic root of 22455861 is about 282.1260816420.

The spelling of 22455861 in words is "twenty-two million, four hundred fifty-five thousand, eight hundred sixty-one".