5166355391 has 2 divisors, whose sum is σ = 5166355392. Its totient is φ = 5166355390.

The previous prime is 5166355373. The next prime is 5166355451. The reversal of 5166355391 is 1935536615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5166355391 - 2²⁶ = 5099246527 is a prime.

It is a super-2 number, since 2×5166355391² = 53382456052229525762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5166355331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2583177695 + 2583177696.

It is an arithmetic number, because the mean of its divisors is an integer number (2583177696).

Almost surely, 2^5166355391 is an apocalyptic number.

5166355391 is a deficient number, since it is larger than the sum of its proper divisors (1).

5166355391 is an equidigital number, since it uses as much as digits as its factorization.

5166355391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 364500, while the sum is 44.

The square root of 5166355391 is about 71877.3635507035. The cubic root of 5166355391 is about 1728.7336775356.

The spelling of 5166355391 in words is "five billion, one hundred sixty-six million, three hundred fifty-five thousand, three hundred ninety-one".