22481519 has 4 divisors (see below), whose sum is σ = 22501440. Its totient is φ = 22461600.

The previous prime is 22481507. The next prime is 22481521. The reversal of 22481519 is 91518422.

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

It is a cyclic number.

It is not a de Polignac number, because 22481519 - 2¹² = 22477423 is a prime.

It is a super-2 number, since 2×22481519² = 1010837393094722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22481539) 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, 8159 + ... + 10560.

It is an arithmetic number, because the mean of its divisors is an integer number (5625360).

Almost surely, 2^22481519 is an apocalyptic number.

22481519 is a deficient number, since it is larger than the sum of its proper divisors (19921).

22481519 is a wasteful number, since it uses less digits than its factorization.

22481519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19920.

The product of its digits is 5760, while the sum is 32.

The square root of 22481519 is about 4741.4680216152. The cubic root of 22481519 is about 282.2334928837.

The spelling of 22481519 in words is "twenty-two million, four hundred eighty-one thousand, five hundred nineteen".