45487865 has 4 divisors (see below), whose sum is σ = 54585444. Its totient is φ = 36390288.

The previous prime is 45487861. The next prime is 45487909. The reversal of 45487865 is 56878454.

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 20757136 + 24730729 = 4556^2 + 4973^2 .

It is a cyclic number.

It is not a de Polignac number, because 45487865 - 2² = 45487861 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45487861) 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, 4548782 + ... + 4548791.

It is an arithmetic number, because the mean of its divisors is an integer number (13646361).

Almost surely, 2^45487865 is an apocalyptic number.

It is an amenable number.

45487865 is a deficient number, since it is larger than the sum of its proper divisors (9097579).

45487865 is an equidigital number, since it uses as much as digits as its factorization.

45487865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9097578.

The product of its digits is 1075200, while the sum is 47.

The square root of 45487865 is about 6744.4692155869. The cubic root of 45487865 is about 356.9701084174.

The spelling of 45487865 in words is "forty-five million, four hundred eighty-seven thousand, eight hundred sixty-five".