44731721 has 2 divisors, whose sum is σ = 44731722. Its totient is φ = 44731720.

The previous prime is 44731703. The next prime is 44731723. The reversal of 44731721 is 12713744.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42055225 + 2676496 = 6485^2 + 1636^2 .

It is a cyclic number.

It is not a de Polignac number, because 44731721 - 2⁶ = 44731657 is a prime.

It is a Sophie Germain prime.

Together with 44731723, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (44731723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22365860 + 22365861.

It is an arithmetic number, because the mean of its divisors is an integer number (22365861).

Almost surely, 2^44731721 is an apocalyptic number.

It is an amenable number.

44731721 is a deficient number, since it is larger than the sum of its proper divisors (1).

44731721 is an equidigital number, since it uses as much as digits as its factorization.

44731721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4704, while the sum is 29.

The square root of 44731721 is about 6688.1777039789. The cubic root of 44731721 is about 354.9810768198.

The spelling of 44731721 in words is "forty-four million, seven hundred thirty-one thousand, seven hundred twenty-one".