51101000497 has 2 divisors, whose sum is σ = 51101000498. Its totient is φ = 51101000496.

The previous prime is 51101000429. The next prime is 51101000521. The reversal of 51101000497 is 79400010115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49653654561 + 1447345936 = 222831^2 + 38044^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51101000497 is a prime.

It is a super-2 number, since 2×51101000497² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51101000297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25550500248 + 25550500249.

It is an arithmetic number, because the mean of its divisors is an integer number (25550500249).

Almost surely, 2^51101000497 is an apocalyptic number.

It is an amenable number.

51101000497 is a deficient number, since it is larger than the sum of its proper divisors (1).

51101000497 is an equidigital number, since it uses as much as digits as its factorization.

51101000497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 28.

The spelling of 51101000497 in words is "fifty-one billion, one hundred one million, four hundred ninety-seven", and thus it is an aban number.