22481077 has 4 divisors (see below), whose sum is σ = 22521996. Its totient is φ = 22440160.

The previous prime is 22481071. The next prime is 22481093. The reversal of 22481077 is 77018422.

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 12489156 + 9991921 = 3534^2 + 3161^2 .

It is a cyclic number.

It is not a de Polignac number, because 22481077 - 2⁷ = 22480949 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22481071) 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, 19624 + ... + 20737.

It is an arithmetic number, because the mean of its divisors is an integer number (5630499).

Almost surely, 2^22481077 is an apocalyptic number.

It is an amenable number.

22481077 is a deficient number, since it is larger than the sum of its proper divisors (40919).

22481077 is an equidigital number, since it uses as much as digits as its factorization.

22481077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40918.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 22481077 is about 4741.4214113491. The cubic root of 22481077 is about 282.2316432456.

Adding to 22481077 its reverse (77018422), we get a palindrome (99499499).

The spelling of 22481077 in words is "twenty-two million, four hundred eighty-one thousand, seventy-seven".