45551917 has 2 divisors, whose sum is σ = 45551918. Its totient is φ = 45551916.

The previous prime is 45551903. The next prime is 45551939. The reversal of 45551917 is 71915554.

45551917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45549001 + 2916 = 6749^2 + 54^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45551917 is a prime.

It is equal to p_2749636 and since 45551917 and 2749636 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45558917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22775958 + 22775959.

It is an arithmetic number, because the mean of its divisors is an integer number (22775959).

Almost surely, 2^45551917 is an apocalyptic number.

It is an amenable number.

45551917 is a deficient number, since it is larger than the sum of its proper divisors (1).

45551917 is an equidigital number, since it uses as much as digits as its factorization.

45551917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31500, while the sum is 37.

The square root of 45551917 is about 6749.2160285473. The cubic root of 45551917 is about 357.1375811106.

The spelling of 45551917 in words is "forty-five million, five hundred fifty-one thousand, nine hundred seventeen".