5250161891 has 8 divisors (see below), whose sum is σ = 5836408704. Its totient is φ = 4689970560.

The previous prime is 5250161869. The next prime is 5250161899. The reversal of 5250161891 is 1981610525.

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

It is a cyclic number.

It is not a de Polignac number, because 5250161891 - 2¹⁴ = 5250145507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5250161899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6513446 + ... + 6514251.

It is an arithmetic number, because the mean of its divisors is an integer number (729551088).

Almost surely, 2^5250161891 is an apocalyptic number.

5250161891 is a deficient number, since it is larger than the sum of its proper divisors (586246813).

5250161891 is a wasteful number, since it uses less digits than its factorization.

5250161891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13027741.

The product of its (nonzero) digits is 21600, while the sum is 38.

The square root of 5250161891 is about 72458.0008763698. Note that the first 3 decimals coincide. The cubic root of 5250161891 is about 1738.0311869399.

The spelling of 5250161891 in words is "five billion, two hundred fifty million, one hundred sixty-one thousand, eight hundred ninety-one".