55615560071 has 2 divisors, whose sum is σ = 55615560072. Its totient is φ = 55615560070.

The previous prime is 55615560047. The next prime is 55615560089. The reversal of 55615560071 is 17006551655.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55615560071 is a prime.

It is a super-2 number, since 2×55615560071² (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 (55615560001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27807780035 + 27807780036.

It is an arithmetic number, because the mean of its divisors is an integer number (27807780036).

Almost surely, 2^55615560071 is an apocalyptic number.

55615560071 is a deficient number, since it is larger than the sum of its proper divisors (1).

55615560071 is an equidigital number, since it uses as much as digits as its factorization.

55615560071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157500, while the sum is 41.

The spelling of 55615560071 in words is "fifty-five billion, six hundred fifteen million, five hundred sixty thousand, seventy-one".