51550352233 has 2 divisors, whose sum is σ = 51550352234. Its totient is φ = 51550352232.

The previous prime is 51550352221. The next prime is 51550352239. The reversal of 51550352233 is 33225305515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48293139049 + 3257213184 = 219757^2 + 57072^2 .

It is a cyclic number.

It is not a de Polignac number, because 51550352233 - 2²¹ = 51548255081 is a prime.

It is not a weakly prime, because it can be changed into another prime (51550352239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25775176116 + 25775176117.

It is an arithmetic number, because the mean of its divisors is an integer number (25775176117).

Almost surely, 2^51550352233 is an apocalyptic number.

It is an amenable number.

51550352233 is a deficient number, since it is larger than the sum of its proper divisors (1).

51550352233 is an equidigital number, since it uses as much as digits as its factorization.

51550352233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67500, while the sum is 34.

Adding to 51550352233 its reverse (33225305515), we get a palindrome (84775657748).

The spelling of 51550352233 in words is "fifty-one billion, five hundred fifty million, three hundred fifty-two thousand, two hundred thirty-three".