27224145 has 48 divisors (see below), whose sum is σ = 51302160. Its totient is φ = 13275648.

The previous prime is 27224143. The next prime is 27224147. The reversal of 27224145 is 54142272.

It is an interprime number because it is at equal distance from previous prime (27224143) and next prime (27224147).

It can be written as a sum of positive squares in 8 ways, for example, as 2214144 + 25010001 = 1488^2 + 5001^2 .

It is not a de Polignac number, because 27224145 - 2¹ = 27224143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27224143) 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 47 ways as a sum of consecutive naturals, for example, 101071 + ... + 101339.

It is an arithmetic number, because the mean of its divisors is an integer number (1068795).

Almost surely, 2^27224145 is an apocalyptic number.

It is an amenable number.

27224145 is a deficient number, since it is larger than the sum of its proper divisors (24078015).

27224145 is a wasteful number, since it uses less digits than its factorization.

27224145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466 (or 463 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 27224145 is about 5217.6762068952. The cubic root of 27224145 is about 300.8278799478.

The spelling of 27224145 in words is "twenty-seven million, two hundred twenty-four thousand, one hundred forty-five".