51531111367 has 2 divisors, whose sum is σ = 51531111368. Its totient is φ = 51531111366.

The previous prime is 51531111299. The next prime is 51531111389. The reversal of 51531111367 is 76311113515.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51531111367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51531111397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25765555683 + 25765555684.

It is an arithmetic number, because the mean of its divisors is an integer number (25765555684).

Almost surely, 2^51531111367 is an apocalyptic number.

51531111367 is a deficient number, since it is larger than the sum of its proper divisors (1).

51531111367 is an equidigital number, since it uses as much as digits as its factorization.

51531111367 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9450, while the sum is 34.

The spelling of 51531111367 in words is "fifty-one billion, five hundred thirty-one million, one hundred eleven thousand, three hundred sixty-seven".