45390073 has 2 divisors, whose sum is σ = 45390074. Its totient is φ = 45390072.

The previous prime is 45390047. The next prime is 45390077. The reversal of 45390073 is 37009354.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39100009 + 6290064 = 6253^2 + 2508^2 .

It is a cyclic number.

It is not a de Polignac number, because 45390073 - 2¹³ = 45381881 is a prime.

It is not a weakly prime, because it can be changed into another prime (45390077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22695036 + 22695037.

It is an arithmetic number, because the mean of its divisors is an integer number (22695037).

Almost surely, 2^45390073 is an apocalyptic number.

It is an amenable number.

45390073 is a deficient number, since it is larger than the sum of its proper divisors (1).

45390073 is an equidigital number, since it uses as much as digits as its factorization.

45390073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 45390073 is about 6737.2155227512. The cubic root of 45390073 is about 356.7141143775.

The spelling of 45390073 in words is "forty-five million, three hundred ninety thousand, seventy-three".