45390473 has 2 divisors, whose sum is σ = 45390474. Its totient is φ = 45390472.

The previous prime is 45390469. The next prime is 45390491. The reversal of 45390473 is 37409354.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43191184 + 2199289 = 6572^2 + 1483^2 .

It is a cyclic number.

It is not a de Polignac number, because 45390473 - 2² = 45390469 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (45390073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22695236 + 22695237.

It is an arithmetic number, because the mean of its divisors is an integer number (22695237).

Almost surely, 2^45390473 is an apocalyptic number.

It is an amenable number.

45390473 is a deficient number, since it is larger than the sum of its proper divisors (1).

45390473 is an equidigital number, since it uses as much as digits as its factorization.

45390473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 45390473 is about 6737.2452085404. The cubic root of 45390473 is about 356.7151622221.

The spelling of 45390473 in words is "forty-five million, three hundred ninety thousand, four hundred seventy-three".