22155250 has 64 divisors (see below), whose sum is σ = 47410272. Its totient is φ = 7680000.

The previous prime is 22155247. The next prime is 22155253. The reversal of 22155250 is 5255122.

It is an interprime number because it is at equal distance from previous prime (22155247) and next prime (22155253).

It can be written as a sum of positive squares in 16 ways, for example, as 149769 + 22005481 = 387^2 + 4691^2 .

It is not an unprimeable number, because it can be changed into a prime (22155253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55050 + ... + 55450.

Almost surely, 2^22155250 is an apocalyptic number.

22155250 is an abundant number, since it is smaller than the sum of its proper divisors (25255022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22155250 is a wasteful number, since it uses less digits than its factorization.

22155250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 22155250 is about 4706.9363709317. The cubic root of 22155250 is about 280.8615047645.

The spelling of 22155250 in words is "twenty-two million, one hundred fifty-five thousand, two hundred fifty".