51245052487 has 2 divisors, whose sum is σ = 51245052488. Its totient is φ = 51245052486.

The previous prime is 51245052451. The next prime is 51245052511. The reversal of 51245052487 is 78425054215.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51245052487 - 2¹⁹ = 51244528199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51245052787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25622526243 + 25622526244.

It is an arithmetic number, because the mean of its divisors is an integer number (25622526244).

Almost surely, 2^51245052487 is an apocalyptic number.

51245052487 is a deficient number, since it is larger than the sum of its proper divisors (1).

51245052487 is an equidigital number, since it uses as much as digits as its factorization.

51245052487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448000, while the sum is 43.

The spelling of 51245052487 in words is "fifty-one billion, two hundred forty-five million, fifty-two thousand, four hundred eighty-seven".