22563554 has 8 divisors (see below), whose sum is σ = 36448860. Its totient is φ = 10413936.

The previous prime is 22563553. The next prime is 22563557. The reversal of 22563554 is 45536522.

It can be written as a sum of positive squares in 2 ways, for example, as 20912329 + 1651225 = 4573^2 + 1285^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×22563554² = 1018227938221832, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22563554.

It is not an unprimeable number, because it can be changed into a prime (22563551) 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, 433889 + ... + 433940.

Almost surely, 2^22563554 is an apocalyptic number.

22563554 is a deficient number, since it is larger than the sum of its proper divisors (13885306).

22563554 is a wasteful number, since it uses less digits than its factorization.

22563554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867844.

The product of its digits is 36000, while the sum is 32.

The square root of 22563554 is about 4750.1109460727. The cubic root of 22563554 is about 282.5763659160.

The spelling of 22563554 in words is "twenty-two million, five hundred sixty-three thousand, five hundred fifty-four".