45681917 has 2 divisors, whose sum is σ = 45681918. Its totient is φ = 45681916.

The previous prime is 45681847. The next prime is 45681943. The reversal of 45681917 is 71918654.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33051001 + 12630916 = 5749^2 + 3554^2 .

It is a cyclic number.

It is not a de Polignac number, because 45681917 - 2¹⁰ = 45680893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45680917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22840958 + 22840959.

It is an arithmetic number, because the mean of its divisors is an integer number (22840959).

Almost surely, 2^45681917 is an apocalyptic number.

It is an amenable number.

45681917 is a deficient number, since it is larger than the sum of its proper divisors (1).

45681917 is an equidigital number, since it uses as much as digits as its factorization.

45681917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 41.

The square root of 45681917 is about 6758.8399152517. The cubic root of 45681917 is about 357.4770017970.

The spelling of 45681917 in words is "forty-five million, six hundred eighty-one thousand, nine hundred seventeen".