22355145 has 24 divisors (see below), whose sum is σ = 38919816. Its totient is φ = 11870208.

The previous prime is 22355107. The next prime is 22355147. The reversal of 22355145 is 54155322.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10265616 + 12089529 = 3204^2 + 3477^2 .

It is not a de Polignac number, because 22355145 - 2⁸ = 22354889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22355147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10599 + ... + 12531.

It is an arithmetic number, because the mean of its divisors is an integer number (1621659).

Almost surely, 2^22355145 is an apocalyptic number.

It is an amenable number.

22355145 is a deficient number, since it is larger than the sum of its proper divisors (16564671).

22355145 is a wasteful number, since it uses less digits than its factorization.

22355145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2201 (or 2198 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 22355145 is about 4728.1227775937. The cubic root of 22355145 is about 281.7036648682.

It can be divided in two parts, 22355 and 145, that added together give a square (22500 = 150²).

The spelling of 22355145 in words is "twenty-two million, three hundred fifty-five thousand, one hundred forty-five".