44757945 has 12 divisors (see below), whose sum is σ = 77580516. Its totient is φ = 23870880.

The previous prime is 44757919. The next prime is 44757949. The reversal of 44757945 is 54975744.

It can be written as a sum of positive squares in 2 ways, for example, as 8433216 + 36324729 = 2904^2 + 6027^2 .

It is not a de Polignac number, because 44757945 - 2⁵ = 44757913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 994621 = 44757945 / (4 + 4 + 7 + 5 + 7 + 9 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 44757945.

It is not an unprimeable number, because it can be changed into a prime (44757949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 497266 + ... + 497355.

It is an arithmetic number, because the mean of its divisors is an integer number (6465043).

Almost surely, 2^44757945 is an apocalyptic number.

44757945 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

44757945 is a deficient number, since it is larger than the sum of its proper divisors (32822571).

44757945 is a wasteful number, since it uses less digits than its factorization.

44757945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994632 (or 994629 counting only the distinct ones).

The product of its digits is 705600, while the sum is 45.

The square root of 44757945 is about 6690.1378909556. The cubic root of 44757945 is about 355.0504325626.

The spelling of 44757945 in words is "forty-four million, seven hundred fifty-seven thousand, nine hundred forty-five".