51550424533 has 2 divisors, whose sum is σ = 51550424534. Its totient is φ = 51550424532.

The previous prime is 51550424477. The next prime is 51550424539. The reversal of 51550424533 is 33542405515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51543983089 + 6441444 = 227033^2 + 2538^2 .

It is a cyclic number.

It is not a de Polignac number, because 51550424533 - 2¹³ = 51550416341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51550424492 and 51550424501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51550424539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25775212266 + 25775212267.

It is an arithmetic number, because the mean of its divisors is an integer number (25775212267).

Almost surely, 2^51550424533 is an apocalyptic number.

It is an amenable number.

51550424533 is a deficient number, since it is larger than the sum of its proper divisors (1).

51550424533 is an equidigital number, since it uses as much as digits as its factorization.

51550424533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180000, while the sum is 37.

The spelling of 51550424533 in words is "fifty-one billion, five hundred fifty million, four hundred twenty-four thousand, five hundred thirty-three".