22445541 has 6 divisors (see below), whose sum is σ = 32421350. Its totient is φ = 14963688.

The previous prime is 22445537. The next prime is 22445551. The reversal of 22445541 is 14554422.

It can be written as a sum of positive squares in only one way, i.e., 14861025 + 7584516 = 3855^2 + 2754^2 .

It is not a de Polignac number, because 22445541 - 2² = 22445537 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22445531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1246966 + ... + 1246983.

Almost surely, 2^22445541 is an apocalyptic number.

It is an amenable number.

22445541 is a deficient number, since it is larger than the sum of its proper divisors (9975809).

22445541 is a wasteful number, since it uses less digits than its factorization.

22445541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2493955 (or 2493952 counting only the distinct ones).

The product of its digits is 6400, while the sum is 27.

The square root of 22445541 is about 4737.6725298399. The cubic root of 22445541 is about 282.0828562929.

Adding to 22445541 its reverse (14554422), we get a palindrome (36999963).

The spelling of 22445541 in words is "twenty-two million, four hundred forty-five thousand, five hundred forty-one".