51222603533 has 2 divisors, whose sum is σ = 51222603534. Its totient is φ = 51222603532.

The previous prime is 51222603503. The next prime is 51222603611. The reversal of 51222603533 is 33530622215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43262752009 + 7959851524 = 207997^2 + 89218^2 .

It is a cyclic number.

It is not a de Polignac number, because 51222603533 - 2¹² = 51222599437 is a prime.

It is a super-2 number, since 2×51222603533² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51222603533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51222603503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25611301766 + 25611301767.

It is an arithmetic number, because the mean of its divisors is an integer number (25611301767).

Almost surely, 2^51222603533 is an apocalyptic number.

It is an amenable number.

51222603533 is a deficient number, since it is larger than the sum of its proper divisors (1).

51222603533 is an equidigital number, since it uses as much as digits as its factorization.

51222603533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 32.

The spelling of 51222603533 in words is "fifty-one billion, two hundred twenty-two million, six hundred three thousand, five hundred thirty-three".