45071671 has 4 divisors (see below), whose sum is σ = 45118144. Its totient is φ = 45025200.

The previous prime is 45071657. The next prime is 45071681. The reversal of 45071671 is 17617054.

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 45071671 - 2¹⁹ = 44547383 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 (45071681) 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, 21750 + ... + 23731.

It is an arithmetic number, because the mean of its divisors is an integer number (11279536).

Almost surely, 2^45071671 is an apocalyptic number.

45071671 is a deficient number, since it is larger than the sum of its proper divisors (46473).

45071671 is an equidigital number, since it uses as much as digits as its factorization.

45071671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46472.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 45071671 is about 6713.5438480731. The cubic root of 45071671 is about 355.8780644344.

The spelling of 45071671 in words is "forty-five million, seventy-one thousand, six hundred seventy-one".