45312115 has 4 divisors (see below), whose sum is σ = 54374544. Its totient is φ = 36249688.

The previous prime is 45312079. The next prime is 45312119. The reversal of 45312115 is 51121354.

It is a happy number.

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 45312115 - 2⁹ = 45311603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45312119) 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, 4531207 + ... + 4531216.

It is an arithmetic number, because the mean of its divisors is an integer number (13593636).

Almost surely, 2^45312115 is an apocalyptic number.

45312115 is a deficient number, since it is larger than the sum of its proper divisors (9062429).

45312115 is an equidigital number, since it uses as much as digits as its factorization.

45312115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9062428.

The product of its digits is 600, while the sum is 22.

The square root of 45312115 is about 6731.4274117753. The cubic root of 45312115 is about 356.5097770786.

Adding to 45312115 its reverse (51121354), we get a palindrome (96433469).

The spelling of 45312115 in words is "forty-five million, three hundred twelve thousand, one hundred fifteen".