55487623069 has 2 divisors, whose sum is σ = 55487623070. Its totient is φ = 55487623068.

The previous prime is 55487622989. The next prime is 55487623109. The reversal of 55487623069 is 96032678455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41042708100 + 14444914969 = 202590^2 + 120187^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55487623069 is a prime.

It is a super-2 number, since 2×55487623069² (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 (55487623669) 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, 27743811534 + 27743811535.

It is an arithmetic number, because the mean of its divisors is an integer number (27743811535).

Almost surely, 2^55487623069 is an apocalyptic number.

It is an amenable number.

55487623069 is a deficient number, since it is larger than the sum of its proper divisors (1).

55487623069 is an equidigital number, since it uses as much as digits as its factorization.

55487623069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10886400, while the sum is 55.

The spelling of 55487623069 in words is "fifty-five billion, four hundred eighty-seven million, six hundred twenty-three thousand, sixty-nine".