51160181 has 2 divisors, whose sum is σ = 51160182. Its totient is φ = 51160180.

The previous prime is 51160129. The next prime is 51160183. The reversal of 51160181 is 18106115.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38019556 + 13140625 = 6166^2 + 3625^2 .

It is a cyclic number.

It is not a de Polignac number, because 51160181 - 2⁶ = 51160117 is a prime.

It is a super-2 number, since 2×51160181² = 5234728239905522, which contains 22 as substring.

Together with 51160183, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51160183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25580090 + 25580091.

It is an arithmetic number, because the mean of its divisors is an integer number (25580091).

Almost surely, 2^51160181 is an apocalyptic number.

It is an amenable number.

51160181 is a deficient number, since it is larger than the sum of its proper divisors (1).

51160181 is an equidigital number, since it uses as much as digits as its factorization.

51160181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 23.

The square root of 51160181 is about 7152.6345495908. The cubic root of 51160181 is about 371.2308195225.

Adding to 51160181 its reverse (18106115), we get a palindrome (69266296).

The spelling of 51160181 in words is "fifty-one million, one hundred sixty thousand, one hundred eighty-one".