51254075140949 has 2 divisors, whose sum is σ = 51254075140950. Its totient is φ = 51254075140948.

The previous prime is 51254075140813. The next prime is 51254075140963. The reversal of 51254075140949 is 94904157045215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48346197578449 + 2907877562500 = 6953143^2 + 1705250^2 .

It is a cyclic number.

It is not a de Polignac number, because 51254075140949 - 2⁴⁴ = 33661889096533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51254075140894 and 51254075140903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51254075140969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25627037570474 + 25627037570475.

It is an arithmetic number, because the mean of its divisors is an integer number (25627037570475).

Almost surely, 2^{51254075140949} is an apocalyptic number.

It is an amenable number.

51254075140949 is a deficient number, since it is larger than the sum of its proper divisors (1).

51254075140949 is an equidigital number, since it uses as much as digits as its factorization.

51254075140949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072000, while the sum is 56.

The spelling of 51254075140949 in words is "fifty-one trillion, two hundred fifty-four billion, seventy-five million, one hundred forty thousand, nine hundred forty-nine".