45691145 has 4 divisors (see below), whose sum is σ = 54829380. Its totient is φ = 36552912.

The previous prime is 45691111. The next prime is 45691157. The reversal of 45691145 is 54119654.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6390784 + 39300361 = 2528^2 + 6269^2 .

It is a cyclic number.

It is not a de Polignac number, because 45691145 - 2¹² = 45687049 is a prime.

It is a super-2 number, since 2×45691145² = 4175361462822050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4569110 + ... + 4569119.

It is an arithmetic number, because the mean of its divisors is an integer number (13707345).

Almost surely, 2^45691145 is an apocalyptic number.

It is an amenable number.

45691145 is a deficient number, since it is larger than the sum of its proper divisors (9138235).

45691145 is an equidigital number, since it uses as much as digits as its factorization.

45691145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9138234.

The product of its digits is 21600, while the sum is 35.

The square root of 45691145 is about 6759.5225423102. The cubic root of 45691145 is about 357.5010709538.

The spelling of 45691145 in words is "forty-five million, six hundred ninety-one thousand, one hundred forty-five".