45069721 has 2 divisors, whose sum is σ = 45069722. Its totient is φ = 45069720.

The previous prime is 45069659. The next prime is 45069727. The reversal of 45069721 is 12796054.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25806400 + 19263321 = 5080^2 + 4389^2 .

It is a cyclic number.

It is not a de Polignac number, because 45069721 - 2²¹ = 42972569 is a prime.

It is not a weakly prime, because it can be changed into another prime (45069727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22534860 + 22534861.

It is an arithmetic number, because the mean of its divisors is an integer number (22534861).

Almost surely, 2^45069721 is an apocalyptic number.

It is an amenable number.

45069721 is a deficient number, since it is larger than the sum of its proper divisors (1).

45069721 is an equidigital number, since it uses as much as digits as its factorization.

45069721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 45069721 is about 6713.3986176899. The cubic root of 45069721 is about 355.8729320736.

The spelling of 45069721 in words is "forty-five million, sixty-nine thousand, seven hundred twenty-one".