51523332551 has 2 divisors, whose sum is σ = 51523332552. Its totient is φ = 51523332550.

The previous prime is 51523332547. The next prime is 51523332559. The reversal of 51523332551 is 15523332515.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51523332551 - 2² = 51523332547 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51523332559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25761666275 + 25761666276.

It is an arithmetic number, because the mean of its divisors is an integer number (25761666276).

Almost surely, 2^51523332551 is an apocalyptic number.

51523332551 is a deficient number, since it is larger than the sum of its proper divisors (1).

51523332551 is an equidigital number, since it uses as much as digits as its factorization.

51523332551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67500, while the sum is 35.

The spelling of 51523332551 in words is "fifty-one billion, five hundred twenty-three million, three hundred thirty-two thousand, five hundred fifty-one".