45185871 has 4 divisors (see below), whose sum is σ = 60247832. Its totient is φ = 30123912.

The previous prime is 45185849. The next prime is 45185873. The reversal of 45185871 is 17858154.

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

It is not a de Polignac number, because 45185871 - 2⁶ = 45185807 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 (45185873) 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, 7530976 + ... + 7530981.

It is an arithmetic number, because the mean of its divisors is an integer number (15061958).

Almost surely, 2^45185871 is an apocalyptic number.

45185871 is a deficient number, since it is larger than the sum of its proper divisors (15061961).

45185871 is a wasteful number, since it uses less digits than its factorization.

45185871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15061960.

The product of its digits is 44800, while the sum is 39.

The square root of 45185871 is about 6722.0436624586. The cubic root of 45185871 is about 356.1783787076.

It can be divided in two parts, 45185 and 871, that added together give a triangular number (46056 = T₃₀₃).

The spelling of 45185871 in words is "forty-five million, one hundred eighty-five thousand, eight hundred seventy-one".