55145567287 has 2 divisors, whose sum is σ = 55145567288. Its totient is φ = 55145567286.

The previous prime is 55145567219. The next prime is 55145567297. The reversal of 55145567287 is 78276554155.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55145567287 - 2²⁷ = 55011349559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55145567297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27572783643 + 27572783644.

It is an arithmetic number, because the mean of its divisors is an integer number (27572783644).

Almost surely, 2^55145567287 is an apocalyptic number.

55145567287 is a deficient number, since it is larger than the sum of its proper divisors (1).

55145567287 is an equidigital number, since it uses as much as digits as its factorization.

55145567287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11760000, while the sum is 55.

The spelling of 55145567287 in words is "fifty-five billion, one hundred forty-five million, five hundred sixty-seven thousand, two hundred eighty-seven".