5671491 has 8 divisors (see below), whose sum is σ = 8642304. Its totient is φ = 3240840.

The previous prime is 5671451. The next prime is 5671499. The reversal of 5671491 is 1941765.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5671491 - 2⁶ = 5671427 is a prime.

It is an Ulam number.

5671491 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5671499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135015 + ... + 135056.

It is an arithmetic number, because the mean of its divisors is an integer number (1080288).

Almost surely, 2^5671491 is an apocalyptic number.

5671491 is a deficient number, since it is larger than the sum of its proper divisors (2970813).

5671491 is a wasteful number, since it uses less digits than its factorization.

5671491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270081.

The product of its digits is 7560, while the sum is 33.

The square root of 5671491 is about 2381.4892399505. The cubic root of 5671491 is about 178.3332875263. Note that the first 3 decimals are identical.

The spelling of 5671491 in words is "five million, six hundred seventy-one thousand, four hundred ninety-one".