55819707287 has 2 divisors, whose sum is σ = 55819707288. Its totient is φ = 55819707286.

The previous prime is 55819707283. The next prime is 55819707301. The reversal of 55819707287 is 78270791855.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55819707287 - 2² = 55819707283 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55819707283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27909853643 + 27909853644.

It is an arithmetic number, because the mean of its divisors is an integer number (27909853644).

Almost surely, 2^55819707287 is an apocalyptic number.

55819707287 is a deficient number, since it is larger than the sum of its proper divisors (1).

55819707287 is an equidigital number, since it uses as much as digits as its factorization.

55819707287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9878400, while the sum is 59.

The spelling of 55819707287 in words is "fifty-five billion, eight hundred nineteen million, seven hundred seven thousand, two hundred eighty-seven".