22503481 has 16 divisors (see below), whose sum is σ = 30215808. Its totient is φ = 16185600.

The previous prime is 22503479. The next prime is 22503487. The reversal of 22503481 is 18430522.

It is a cyclic number.

It is not a de Polignac number, because 22503481 - 2¹ = 22503479 is a prime.

It is a super-2 number, since 2×22503481² = 1012813314234722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22503487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10240 + ... + 12241.

It is an arithmetic number, because the mean of its divisors is an integer number (1888488).

Almost surely, 2^22503481 is an apocalyptic number.

It is an amenable number.

22503481 is a deficient number, since it is larger than the sum of its proper divisors (7712327).

22503481 is a wasteful number, since it uses less digits than its factorization.

22503481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22512.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 22503481 is about 4743.7834056795. The cubic root of 22503481 is about 282.3253667865.

The spelling of 22503481 in words is "twenty-two million, five hundred three thousand, four hundred eighty-one".