45645973 has 2 divisors, whose sum is σ = 45645974. Its totient is φ = 45645972.

The previous prime is 45645967. The next prime is 45645979. The reversal of 45645973 is 37954654.

It is a balanced prime because it is at equal distance from previous prime (45645967) and next prime (45645979).

It can be written as a sum of positive squares in only one way, i.e., 38713284 + 6932689 = 6222^2 + 2633^2 .

It is a cyclic number.

It is not a de Polignac number, because 45645973 - 2⁹ = 45645461 is a prime.

It is a super-2 number, since 2×45645973² = 4167109702233458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45645979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22822986 + 22822987.

It is an arithmetic number, because the mean of its divisors is an integer number (22822987).

Almost surely, 2^45645973 is an apocalyptic number.

It is an amenable number.

45645973 is a deficient number, since it is larger than the sum of its proper divisors (1).

45645973 is an equidigital number, since it uses as much as digits as its factorization.

45645973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 43.

The square root of 45645973 is about 6756.1803557928. The cubic root of 45645973 is about 357.3832190655.

The spelling of 45645973 in words is "forty-five million, six hundred forty-five thousand, nine hundred seventy-three".