22481601 has 4 divisors (see below), whose sum is σ = 29975472. Its totient is φ = 14987732.

The previous prime is 22481581. The next prime is 22481609. The reversal of 22481601 is 10618422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22481601 - 2¹⁴ = 22465217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22481609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3746931 + ... + 3746936.

It is an arithmetic number, because the mean of its divisors is an integer number (7493868).

Almost surely, 2^22481601 is an apocalyptic number.

It is an amenable number.

22481601 is a deficient number, since it is larger than the sum of its proper divisors (7493871).

22481601 is an equidigital number, since it uses as much as digits as its factorization.

22481601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7493870.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 22481601 is about 4741.4766687183. The cubic root of 22481601 is about 282.2338360266.

The spelling of 22481601 in words is "twenty-two million, four hundred eighty-one thousand, six hundred one".