22256461 has 4 divisors (see below), whose sum is σ = 22476924. Its totient is φ = 22036000.

The previous prime is 22256453. The next prime is 22256471. The reversal of 22256461 is 16465222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21808900 + 447561 = 4670^2 + 669^2 .

It is a cyclic number.

It is not a de Polignac number, because 22256461 - 2³ = 22256453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22256401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110080 + ... + 110281.

It is an arithmetic number, because the mean of its divisors is an integer number (5619231).

Almost surely, 2^22256461 is an apocalyptic number.

It is an amenable number.

22256461 is a deficient number, since it is larger than the sum of its proper divisors (220463).

22256461 is a wasteful number, since it uses less digits than its factorization.

22256461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220462.

The product of its digits is 5760, while the sum is 28.

The square root of 22256461 is about 4717.6753809477. The cubic root of 22256461 is about 281.2885381923.

The spelling of 22256461 in words is "twenty-two million, two hundred fifty-six thousand, four hundred sixty-one".