55431654557159 has 2 divisors, whose sum is σ = 55431654557160. Its totient is φ = 55431654557158.

The previous prime is 55431654557129. The next prime is 55431654557197. The reversal of 55431654557159 is 95175545613455.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55431654557159 is a prime.

It is a super-2 number, since 2×55431654557159² (a number of 28 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 55431654557095 and 55431654557104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55431654557129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27715827278579 + 27715827278580.

It is an arithmetic number, because the mean of its divisors is an integer number (27715827278580).

Almost surely, 2^{55431654557159} is an apocalyptic number.

55431654557159 is a deficient number, since it is larger than the sum of its proper divisors (1).

55431654557159 is an equidigital number, since it uses as much as digits as its factorization.

55431654557159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 283500000, while the sum is 65.

The spelling of 55431654557159 in words is "fifty-five trillion, four hundred thirty-one billion, six hundred fifty-four million, five hundred fifty-seven thousand, one hundred fifty-nine".