45287287 has 4 divisors (see below), whose sum is σ = 45417400. Its totient is φ = 45157176.

The previous prime is 45287261. The next prime is 45287293. The reversal of 45287287 is 78278254.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45287287 - 2⁷ = 45287159 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 (45287587) 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, 64533 + ... + 65230.

It is an arithmetic number, because the mean of its divisors is an integer number (11354350).

Almost surely, 2^45287287 is an apocalyptic number.

45287287 is a deficient number, since it is larger than the sum of its proper divisors (130113).

45287287 is a wasteful number, since it uses less digits than its factorization.

45287287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130112.

The product of its digits is 250880, while the sum is 43.

The square root of 45287287 is about 6729.5829737065. The cubic root of 45287287 is about 356.4446506998. Note that the first 3 decimals are identical.

The spelling of 45287287 in words is "forty-five million, two hundred eighty-seven thousand, two hundred eighty-seven".