51548271479 has 2 divisors, whose sum is σ = 51548271480. Its totient is φ = 51548271478.

The previous prime is 51548271469. The next prime is 51548271497. The reversal of 51548271479 is 97417284515.

It is a happy number.

Together with next prime (51548271497) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51548271479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51548271479.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51548271469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25774135739 + 25774135740.

It is an arithmetic number, because the mean of its divisors is an integer number (25774135740).

Almost surely, 2^51548271479 is an apocalyptic number.

51548271479 is a deficient number, since it is larger than the sum of its proper divisors (1).

51548271479 is an equidigital number, since it uses as much as digits as its factorization.

51548271479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2822400, while the sum is 53.

The spelling of 51548271479 in words is "fifty-one billion, five hundred forty-eight million, two hundred seventy-one thousand, four hundred seventy-nine".