51122311 has 2 divisors, whose sum is σ = 51122312. Its totient is φ = 51122310.

The previous prime is 51122237. The next prime is 51122321. The reversal of 51122311 is 11322115.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51122311 - 2¹⁵ = 51089543 is a prime.

It is a super-2 number, since 2×51122311² = 5226981363961442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51122321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25561155 + 25561156.

It is an arithmetic number, because the mean of its divisors is an integer number (25561156).

Almost surely, 2^51122311 is an apocalyptic number.

51122311 is a deficient number, since it is larger than the sum of its proper divisors (1).

51122311 is an equidigital number, since it uses as much as digits as its factorization.

51122311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60, while the sum is 16.

The square root of 51122311 is about 7149.9867832046. The cubic root of 51122311 is about 371.1391989098.

Adding to 51122311 its reverse (11322115), we get a palindrome (62444426).

It can be divided in two parts, 511 and 22311, that added together give a palindrome (22822).

The spelling of 51122311 in words is "fifty-one million, one hundred twenty-two thousand, three hundred eleven".