51522521233 has 2 divisors, whose sum is σ = 51522521234. Its totient is φ = 51522521232.

The previous prime is 51522521221. The next prime is 51522521243. The reversal of 51522521233 is 33212522515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51290019729 + 232501504 = 226473^2 + 15248^2 .

It is a cyclic number.

It is not a de Polignac number, because 51522521233 - 2¹³ = 51522513041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51522521195 and 51522521204.

It is not a weakly prime, because it can be changed into another prime (51522521213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25761260616 + 25761260617.

It is an arithmetic number, because the mean of its divisors is an integer number (25761260617).

Almost surely, 2^51522521233 is an apocalyptic number.

It is an amenable number.

51522521233 is a deficient number, since it is larger than the sum of its proper divisors (1).

51522521233 is an equidigital number, since it uses as much as digits as its factorization.

51522521233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18000, while the sum is 31.

The spelling of 51522521233 in words is "fifty-one billion, five hundred twenty-two million, five hundred twenty-one thousand, two hundred thirty-three".