55298687 has 2 divisors, whose sum is σ = 55298688. Its totient is φ = 55298686.

The previous prime is 55298653. The next prime is 55298707. The reversal of 55298687 is 78689255.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55298687 - 2⁶ = 55298623 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55297687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27649343 + 27649344.

It is an arithmetic number, because the mean of its divisors is an integer number (27649344).

Almost surely, 2^55298687 is an apocalyptic number.

55298687 is a deficient number, since it is larger than the sum of its proper divisors (1).

55298687 is an equidigital number, since it uses as much as digits as its factorization.

55298687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1209600, while the sum is 50.

The square root of 55298687 is about 7436.3086945070. The cubic root of 55298687 is about 380.9824233021.

The spelling of 55298687 in words is "fifty-five million, two hundred ninety-eight thousand, six hundred eighty-seven".