45087745 has 4 divisors (see below), whose sum is σ = 54105300. Its totient is φ = 36070192.

The previous prime is 45087743. The next prime is 45087781. The reversal of 45087745 is 54778054.

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 33315984 + 11771761 = 5772^2 + 3431^2 .

It is a cyclic number.

It is not a de Polignac number, because 45087745 - 2¹ = 45087743 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 45087698 and 45087707.

It is not an unprimeable number, because it can be changed into a prime (45087743) 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, 4508770 + ... + 4508779.

It is an arithmetic number, because the mean of its divisors is an integer number (13526325).

Almost surely, 2^45087745 is an apocalyptic number.

It is an amenable number.

45087745 is a deficient number, since it is larger than the sum of its proper divisors (9017555).

45087745 is an equidigital number, since it uses as much as digits as its factorization.

45087745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9017554.

The product of its (nonzero) digits is 156800, while the sum is 40.

The square root of 45087745 is about 6714.7408736302. The cubic root of 45087745 is about 355.9203652411.

The spelling of 45087745 in words is "forty-five million, eighty-seven thousand, seven hundred forty-five".