51160091 has 2 divisors, whose sum is σ = 51160092. Its totient is φ = 51160090.

The previous prime is 51160069. The next prime is 51160093. The reversal of 51160091 is 19006115.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51160091 is a prime.

It is a super-2 number, since 2×51160091² = 5234709822256562, which contains 22 as substring.

Together with 51160093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51160093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25580045 + 25580046.

It is an arithmetic number, because the mean of its divisors is an integer number (25580046).

Almost surely, 2^51160091 is an apocalyptic number.

51160091 is a deficient number, since it is larger than the sum of its proper divisors (1).

51160091 is an equidigital number, since it uses as much as digits as its factorization.

51160091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 23.

The square root of 51160091 is about 7152.6282581999. The cubic root of 51160091 is about 371.2306018350.

The spelling of 51160091 in words is "fifty-one million, one hundred sixty thousand, ninety-one".