45395821 has 2 divisors, whose sum is σ = 45395822. Its totient is φ = 45395820.

The previous prime is 45395809. The next prime is 45395827. The reversal of 45395821 is 12859354.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33767721 + 11628100 = 5811^2 + 3410^2 .

It is a cyclic number.

It is not a de Polignac number, because 45395821 - 2⁵ = 45395789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45395827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22697910 + 22697911.

It is an arithmetic number, because the mean of its divisors is an integer number (22697911).

Almost surely, 2^45395821 is an apocalyptic number.

It is an amenable number.

45395821 is a deficient number, since it is larger than the sum of its proper divisors (1).

45395821 is an equidigital number, since it uses as much as digits as its factorization.

45395821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 37.

The square root of 45395821 is about 6737.6420949766. The cubic root of 45395821 is about 356.7291713129.

The spelling of 45395821 in words is "forty-five million, three hundred ninety-five thousand, eight hundred twenty-one".