22155345 has 24 divisors (see below), whose sum is σ = 38751336. Its totient is φ = 11708928.

The previous prime is 22155317. The next prime is 22155361. The reversal of 22155345 is 54355122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2944656 + 19210689 = 1716^2 + 4383^2 .

It is not a de Polignac number, because 22155345 - 2⁹ = 22154833 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2907 + ... + 7263.

It is an arithmetic number, because the mean of its divisors is an integer number (1614639).

Almost surely, 2^22155345 is an apocalyptic number.

It is an amenable number.

22155345 is a deficient number, since it is larger than the sum of its proper divisors (16595991).

22155345 is a wasteful number, since it uses less digits than its factorization.

22155345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4481 (or 4478 counting only the distinct ones).

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

The square root of 22155345 is about 4706.9464624106. The cubic root of 22155345 is about 280.8619062014.

It can be divided in two parts, 22155 and 345, that added together give a square (22500 = 150²).

The spelling of 22155345 in words is "twenty-two million, one hundred fifty-five thousand, three hundred forty-five".