44540657 has 6 divisors (see below), whose sum is σ = 51812658. Its totient is φ = 38177664.

The previous prime is 44540651. The next prime is 44540677. The reversal of 44540657 is 75604544.

It can be written as a sum of positive squares in only one way, i.e., 44502241 + 38416 = 6671^2 + 196^2 .

It is not a de Polignac number, because 44540657 - 2⁴ = 44540641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44540651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 454448 + ... + 454545.

It is an arithmetic number, because the mean of its divisors is an integer number (8635443).

Almost surely, 2^44540657 is an apocalyptic number.

It is an amenable number.

44540657 is a deficient number, since it is larger than the sum of its proper divisors (7272001).

44540657 is an equidigital number, since it uses as much as digits as its factorization.

44540657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909007 (or 909000 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 35.

The square root of 44540657 is about 6673.8787073186. The cubic root of 44540657 is about 354.4749415825.

The spelling of 44540657 in words is "forty-four million, five hundred forty thousand, six hundred fifty-seven".