45187015 has 4 divisors (see below), whose sum is σ = 54224424. Its totient is φ = 36149608.

The previous prime is 45187007. The next prime is 45187049. The reversal of 45187015 is 51078154.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51078154 = 2 ⋅25539077.

It is a cyclic number.

It is not a de Polignac number, because 45187015 - 2³ = 45187007 is a prime.

It is a super-2 number, since 2×45187015² = 4083732649220450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4518697 + ... + 4518706.

It is an arithmetic number, because the mean of its divisors is an integer number (13556106).

Almost surely, 2^45187015 is an apocalyptic number.

45187015 is a deficient number, since it is larger than the sum of its proper divisors (9037409).

45187015 is an equidigital number, since it uses as much as digits as its factorization.

45187015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9037408.

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 45187015 is about 6722.1287550894. The cubic root of 45187015 is about 356.1813845486.

The spelling of 45187015 in words is "forty-five million, one hundred eighty-seven thousand, fifteen".