51432531523 has 2 divisors, whose sum is σ = 51432531524. Its totient is φ = 51432531522.

The previous prime is 51432531499. The next prime is 51432531539. The reversal of 51432531523 is 32513523415.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51432531523 - 2²¹ = 51430434371 is a prime.

It is not a weakly prime, because it can be changed into another prime (51432532523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25716265761 + 25716265762.

It is an arithmetic number, because the mean of its divisors is an integer number (25716265762).

Almost surely, 2^51432531523 is an apocalyptic number.

51432531523 is a deficient number, since it is larger than the sum of its proper divisors (1).

51432531523 is an equidigital number, since it uses as much as digits as its factorization.

51432531523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54000, while the sum is 34.

The spelling of 51432531523 in words is "fifty-one billion, four hundred thirty-two million, five hundred thirty-one thousand, five hundred twenty-three".