51976147297 has 2 divisors, whose sum is σ = 51976147298. Its totient is φ = 51976147296.

The previous prime is 51976147277. The next prime is 51976147309. The reversal of 51976147297 is 79274167915.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34002991201 + 17973156096 = 184399^2 + 134064^2 .

It is a cyclic number.

It is not a de Polignac number, because 51976147297 - 2²⁷ = 51841929569 is a prime.

It is not a weakly prime, because it can be changed into another prime (51976147277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25988073648 + 25988073649.

It is an arithmetic number, because the mean of its divisors is an integer number (25988073649).

Almost surely, 2^51976147297 is an apocalyptic number.

It is an amenable number.

51976147297 is a deficient number, since it is larger than the sum of its proper divisors (1).

51976147297 is an equidigital number, since it uses as much as digits as its factorization.

51976147297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6667920, while the sum is 58.

The spelling of 51976147297 in words is "fifty-one billion, nine hundred seventy-six million, one hundred forty-seven thousand, two hundred ninety-seven".