45740309 has 2 divisors, whose sum is σ = 45740310. Its totient is φ = 45740308.

The previous prime is 45740293. The next prime is 45740323. The reversal of 45740309 is 90304754.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45185284 + 555025 = 6722^2 + 745^2 .

It is a cyclic number.

It is not a de Polignac number, because 45740309 - 2⁴ = 45740293 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45740339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22870154 + 22870155.

It is an arithmetic number, because the mean of its divisors is an integer number (22870155).

Almost surely, 2^45740309 is an apocalyptic number.

It is an amenable number.

45740309 is a deficient number, since it is larger than the sum of its proper divisors (1).

45740309 is an equidigital number, since it uses as much as digits as its factorization.

45740309 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 32.

The square root of 45740309 is about 6763.1582119599. The cubic root of 45740309 is about 357.6292495639.

The spelling of 45740309 in words is "forty-five million, seven hundred forty thousand, three hundred nine".