51556702159 has 2 divisors, whose sum is σ = 51556702160. Its totient is φ = 51556702158.

The previous prime is 51556702091. The next prime is 51556702177. The reversal of 51556702159 is 95120765515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51556702159 - 2¹³ = 51556693967 is a prime.

It is a super-2 number, since 2×51556702159² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51556702189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25778351079 + 25778351080.

It is an arithmetic number, because the mean of its divisors is an integer number (25778351080).

Almost surely, 2^51556702159 is an apocalyptic number.

51556702159 is a deficient number, since it is larger than the sum of its proper divisors (1).

51556702159 is an equidigital number, since it uses as much as digits as its factorization.

51556702159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 472500, while the sum is 46.

The spelling of 51556702159 in words is "fifty-one billion, five hundred fifty-six million, seven hundred two thousand, one hundred fifty-nine".