51108331 has 2 divisors, whose sum is σ = 51108332. Its totient is φ = 51108330.

The previous prime is 51108319. The next prime is 51108349. The reversal of 51108331 is 13380115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51108331 - 2¹⁹ = 50584043 is a prime.

It is a super-2 number, since 2×51108331² = 5224122995211122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51108311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25554165 + 25554166.

It is an arithmetic number, because the mean of its divisors is an integer number (25554166).

Almost surely, 2^51108331 is an apocalyptic number.

51108331 is a deficient number, since it is larger than the sum of its proper divisors (1).

51108331 is an equidigital number, since it uses as much as digits as its factorization.

51108331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 51108331 is about 7149.0090921749. The cubic root of 51108331 is about 371.1053650258.

Adding to 51108331 its reverse (13380115), we get a palindrome (64488446).

The spelling of 51108331 in words is "fifty-one million, one hundred eight thousand, three hundred thirty-one".