45447907 has 2 divisors, whose sum is σ = 45447908. Its totient is φ = 45447906.

The previous prime is 45447893. The next prime is 45447917. The reversal of 45447907 is 70974454.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45447907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45447907.

It is not a weakly prime, because it can be changed into another prime (45447917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22723953 + 22723954.

It is an arithmetic number, because the mean of its divisors is an integer number (22723954).

Almost surely, 2^45447907 is an apocalyptic number.

45447907 is a deficient number, since it is larger than the sum of its proper divisors (1).

45447907 is an equidigital number, since it uses as much as digits as its factorization.

45447907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 45447907 is about 6741.5062856902. The cubic root of 45447907 is about 356.8655531313.

The spelling of 45447907 in words is "forty-five million, four hundred forty-seven thousand, nine hundred seven".