51903279091 has 2 divisors, whose sum is σ = 51903279092. Its totient is φ = 51903279090.

The previous prime is 51903279083. The next prime is 51903279097. The reversal of 51903279091 is 19097230915.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51903279091 - 2³ = 51903279083 is a prime.

It is not a weakly prime, because it can be changed into another prime (51903279097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25951639545 + 25951639546.

It is an arithmetic number, because the mean of its divisors is an integer number (25951639546).

Almost surely, 2^51903279091 is an apocalyptic number.

51903279091 is a deficient number, since it is larger than the sum of its proper divisors (1).

51903279091 is an equidigital number, since it uses as much as digits as its factorization.

51903279091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 153090, while the sum is 46.

The spelling of 51903279091 in words is "fifty-one billion, nine hundred three million, two hundred seventy-nine thousand, ninety-one".