51552121211 has 2 divisors, whose sum is σ = 51552121212. Its totient is φ = 51552121210.

The previous prime is 51552121207. The next prime is 51552121273. The reversal of 51552121211 is 11212125515.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51552121211 - 2² = 51552121207 is a prime.

It is a super-2 number, since 2×51552121211² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51552121111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25776060605 + 25776060606.

It is an arithmetic number, because the mean of its divisors is an integer number (25776060606).

Almost surely, 2^51552121211 is an apocalyptic number.

51552121211 is a deficient number, since it is larger than the sum of its proper divisors (1).

51552121211 is an equidigital number, since it uses as much as digits as its factorization.

51552121211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1000, while the sum is 26.

Adding to 51552121211 its reverse (11212125515), we get a palindrome (62764246726).

The spelling of 51552121211 in words is "fifty-one billion, five hundred fifty-two million, one hundred twenty-one thousand, two hundred eleven".