45661613 has 2 divisors, whose sum is σ = 45661614. Its totient is φ = 45661612.

The previous prime is 45661597. The next prime is 45661621. The reversal of 45661613 is 31616654.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43059844 + 2601769 = 6562^2 + 1613^2 .

45661613 is a truncatable prime.

It is a cyclic number.

It is not a de Polignac number, because 45661613 - 2⁴ = 45661597 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 45661613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45661513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22830806 + 22830807.

It is an arithmetic number, because the mean of its divisors is an integer number (22830807).

Almost surely, 2^45661613 is an apocalyptic number.

It is an amenable number.

45661613 is a deficient number, since it is larger than the sum of its proper divisors (1).

45661613 is an equidigital number, since it uses as much as digits as its factorization.

45661613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 32.

The square root of 45661613 is about 6757.3377154024. The cubic root of 45661613 is about 357.4240319778.

The spelling of 45661613 in words is "forty-five million, six hundred sixty-one thousand, six hundred thirteen".