45122473 has 18 divisors (see below), whose sum is σ = 52395882. Its totient is φ = 38823840.

The previous prime is 45122449. The next prime is 45122477. The reversal of 45122473 is 37422154.

It can be written as a sum of positive squares in only one way, i.e., 44729344 + 393129 = 6688^2 + 627^2 .

It is a de Polignac number, because none of the positive numbers 2^k-45122473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45122477) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 43165 + ... + 44197.

Almost surely, 2^45122473 is an apocalyptic number.

It is an amenable number.

45122473 is a deficient number, since it is larger than the sum of its proper divisors (7273409).

45122473 is a wasteful number, since it uses less digits than its factorization.

45122473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093 (or 1063 counting only the distinct ones).

The product of its digits is 6720, while the sum is 28.

The square root of 45122473 is about 6717.3263282351. The cubic root of 45122473 is about 356.0117221448.

The spelling of 45122473 in words is "forty-five million, one hundred twenty-two thousand, four hundred seventy-three".