51490231027 has 2 divisors, whose sum is σ = 51490231028. Its totient is φ = 51490231026.

The previous prime is 51490230997. The next prime is 51490231043. The reversal of 51490231027 is 72013209415.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51490231027 - 2⁷ = 51490230899 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51490230983 and 51490231001.

It is not a weakly prime, because it can be changed into another prime (51490231927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25745115513 + 25745115514.

It is an arithmetic number, because the mean of its divisors is an integer number (25745115514).

Almost surely, 2^51490231027 is an apocalyptic number.

51490231027 is a deficient number, since it is larger than the sum of its proper divisors (1).

51490231027 is an equidigital number, since it uses as much as digits as its factorization.

51490231027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 51490231027 in words is "fifty-one billion, four hundred ninety million, two hundred thirty-one thousand, twenty-seven".