22045544 has 8 divisors (see below), whose sum is σ = 41335410. Its totient is φ = 11022768.

The previous prime is 22045537. The next prime is 22045561. The reversal of 22045544 is 44554022.

It can be written as a sum of positive squares in only one way, i.e., 18164644 + 3880900 = 4262^2 + 1970^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1377839 + ... + 1377854.

Almost surely, 2^22045544 is an apocalyptic number.

It is an amenable number.

22045544 is a deficient number, since it is larger than the sum of its proper divisors (19289866).

22045544 is a wasteful number, since it uses less digits than its factorization.

22045544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2755699 (or 2755695 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 22045544 is about 4695.2682564471. The cubic root of 22045544 is about 280.3971574861.

Adding to 22045544 its reverse (44554022), we get a palindrome (66599566).

The spelling of 22045544 in words is "twenty-two million, forty-five thousand, five hundred forty-four".