45694921 has 2 divisors, whose sum is σ = 45694922. Its totient is φ = 45694920.

The previous prime is 45694897. The next prime is 45694937. The reversal of 45694921 is 12949654.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42719296 + 2975625 = 6536^2 + 1725^2 .

It is a cyclic number.

It is not a de Polignac number, because 45694921 - 2¹⁹ = 45170633 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (45694991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22847460 + 22847461.

It is an arithmetic number, because the mean of its divisors is an integer number (22847461).

Almost surely, 2^45694921 is an apocalyptic number.

It is an amenable number.

45694921 is a deficient number, since it is larger than the sum of its proper divisors (1).

45694921 is an equidigital number, since it uses as much as digits as its factorization.

45694921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 40.

The square root of 45694921 is about 6759.8018462082. The cubic root of 45694921 is about 357.5109188639.

The spelling of 45694921 in words is "forty-five million, six hundred ninety-four thousand, nine hundred twenty-one".