45561745 has 4 divisors (see below), whose sum is σ = 54674100. Its totient is φ = 36449392.

The previous prime is 45561743. The next prime is 45561757. The reversal of 45561745 is 54716554.

It is a happy number.

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 6110784 + 39450961 = 2472^2 + 6281^2 .

It is a cyclic number.

It is not a de Polignac number, because 45561745 - 2¹ = 45561743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45561743) 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, 4556170 + ... + 4556179.

It is an arithmetic number, because the mean of its divisors is an integer number (13668525).

Almost surely, 2^45561745 is an apocalyptic number.

It is an amenable number.

45561745 is a deficient number, since it is larger than the sum of its proper divisors (9112355).

45561745 is an equidigital number, since it uses as much as digits as its factorization.

45561745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9112354.

The product of its digits is 84000, while the sum is 37.

The square root of 45561745 is about 6749.9440738424. The cubic root of 45561745 is about 357.1632638625.

The spelling of 45561745 in words is "forty-five million, five hundred sixty-one thousand, seven hundred forty-five".