44145757 has 2 divisors, whose sum is σ = 44145758. Its totient is φ = 44145756.

The previous prime is 44145713. The next prime is 44145769. The reversal of 44145757 is 75754144.

44145757 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25664356 + 18481401 = 5066^2 + 4299^2 .

It is a cyclic number.

It is not a de Polignac number, because 44145757 - 2²³ = 35757149 is a prime.

It is a super-2 number, since 2×44145757² = 3897695722206098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44145707) 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 as a sum of consecutive naturals, namely, 22072878 + 22072879.

It is an arithmetic number, because the mean of its divisors is an integer number (22072879).

Almost surely, 2^44145757 is an apocalyptic number.

It is an amenable number.

44145757 is a deficient number, since it is larger than the sum of its proper divisors (1).

44145757 is an equidigital number, since it uses as much as digits as its factorization.

44145757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78400, while the sum is 37.

The square root of 44145757 is about 6644.2273440935. The cubic root of 44145757 is about 353.4242318842.

The spelling of 44145757 in words is "forty-four million, one hundred forty-five thousand, seven hundred fifty-seven".