45561973 has 4 divisors (see below), whose sum is σ = 45586828. Its totient is φ = 45537120.

The previous prime is 45561961. The next prime is 45561979. The reversal of 45561973 is 37916554.

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 38713284 + 6848689 = 6222^2 + 2617^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45561973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45561979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9438 + ... + 13423.

It is an arithmetic number, because the mean of its divisors is an integer number (11396707).

Almost surely, 2^45561973 is an apocalyptic number.

It is an amenable number.

45561973 is a deficient number, since it is larger than the sum of its proper divisors (24855).

45561973 is a wasteful number, since it uses less digits than its factorization.

45561973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24854.

The product of its digits is 113400, while the sum is 40.

The square root of 45561973 is about 6749.9609628501. The cubic root of 45561973 is about 357.1638596335.

The spelling of 45561973 in words is "forty-five million, five hundred sixty-one thousand, nine hundred seventy-three".