45743681 has 2 divisors, whose sum is σ = 45743682. Its totient is φ = 45743680.

The previous prime is 45743669. The next prime is 45743689. The reversal of 45743681 is 18634754.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34621456 + 11122225 = 5884^2 + 3335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45743681 is a prime.

It is a super-2 number, since 2×45743681² = 4184968702859522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45743689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22871840 + 22871841.

It is an arithmetic number, because the mean of its divisors is an integer number (22871841).

Almost surely, 2^45743681 is an apocalyptic number.

It is an amenable number.

45743681 is a deficient number, since it is larger than the sum of its proper divisors (1).

45743681 is an equidigital number, since it uses as much as digits as its factorization.

45743681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 38.

The square root of 45743681 is about 6763.4074991826. The cubic root of 45743681 is about 357.6380375544.

The spelling of 45743681 in words is "forty-five million, seven hundred forty-three thousand, six hundred eighty-one".