45173813 has 2 divisors, whose sum is σ = 45173814. Its totient is φ = 45173812.

The previous prime is 45173801. The next prime is 45173831. The reversal of 45173813 is 31837154.

Together with next prime (45173831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22829284 + 22344529 = 4778^2 + 4727^2 .

It is a cyclic number.

It is not a de Polignac number, because 45173813 - 2⁴ = 45173797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45173813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45173113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22586906 + 22586907.

It is an arithmetic number, because the mean of its divisors is an integer number (22586907).

Almost surely, 2^45173813 is an apocalyptic number.

It is an amenable number.

45173813 is a deficient number, since it is larger than the sum of its proper divisors (1).

45173813 is an equidigital number, since it uses as much as digits as its factorization.

45173813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 32.

The square root of 45173813 is about 6721.1467027584. The cubic root of 45173813 is about 356.1466934273.

The spelling of 45173813 in words is "forty-five million, one hundred seventy-three thousand, eight hundred thirteen".