5167991 has 2 divisors, whose sum is σ = 5167992. Its totient is φ = 5167990.

The previous prime is 5167973. The next prime is 5168021. The reversal of 5167991 is 1997615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5167991 - 2¹⁴ = 5151607 is a prime.

It is a Chen prime.

It is a plaindrome in base 8.

It is a nialpdrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5167291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2583995 + 2583996.

It is an arithmetic number, because the mean of its divisors is an integer number (2583996).

Almost surely, 2^5167991 is an apocalyptic number.

5167991 is a deficient number, since it is larger than the sum of its proper divisors (1).

5167991 is an equidigital number, since it uses as much as digits as its factorization.

5167991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17010, while the sum is 38.

The square root of 5167991 is about 2273.3215786597. The cubic root of 5167991 is about 172.8916090721.

The spelling of 5167991 in words is "five million, one hundred sixty-seven thousand, nine hundred ninety-one".