44557913 has 2 divisors, whose sum is σ = 44557914. Its totient is φ = 44557912.

The previous prime is 44557883. The next prime is 44557937. The reversal of 44557913 is 31975544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34904464 + 9653449 = 5908^2 + 3107^2 .

It is a cyclic number.

It is not a de Polignac number, because 44557913 - 2¹⁶ = 44492377 is a prime.

It is a super-2 number, since 2×44557913² = 3970815221831138, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (44557963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22278956 + 22278957.

It is an arithmetic number, because the mean of its divisors is an integer number (22278957).

Almost surely, 2^44557913 is an apocalyptic number.

It is an amenable number.

44557913 is a deficient number, since it is larger than the sum of its proper divisors (1).

44557913 is an equidigital number, since it uses as much as digits as its factorization.

44557913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 38.

The square root of 44557913 is about 6675.1713835676. The cubic root of 44557913 is about 354.5207127217.

The spelling of 44557913 in words is "forty-four million, five hundred fifty-seven thousand, nine hundred thirteen".