44222157 has 36 divisors (see below), whose sum is σ = 74915100. Its totient is φ = 25062912.

The previous prime is 44222153. The next prime is 44222161. The reversal of 44222157 is 75122244.

44222157 is a `hidden beast` number, since 442 + 2 + 215 + 7 = 666.

44222157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (44222153) and next prime (44222161).

It can be written as a sum of positive squares in 2 ways, for example, as 9400356 + 34821801 = 3066^2 + 5901^2 .

It is not a de Polignac number, because 44222157 - 2² = 44222153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 44222157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44222153) 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 35 ways as a sum of consecutive naturals, for example, 65373 + ... + 66045.

It is an arithmetic number, because the mean of its divisors is an integer number (2080975).

Almost surely, 2^44222157 is an apocalyptic number.

It is an amenable number.

44222157 is a deficient number, since it is larger than the sum of its proper divisors (30692943).

44222157 is a wasteful number, since it uses less digits than its factorization.

44222157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842 (or 832 counting only the distinct ones).

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

The square root of 44222157 is about 6649.9742104763. The cubic root of 44222157 is about 353.6279966512.

The spelling of 44222157 in words is "forty-four million, two hundred twenty-two thousand, one hundred fifty-seven".