55828687 has 2 divisors, whose sum is σ = 55828688. Its totient is φ = 55828686.

The previous prime is 55828679. The next prime is 55828753. The reversal of 55828687 is 78682855.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55828687 - 2³ = 55828679 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55828687.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55828387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27914343 + 27914344.

It is an arithmetic number, because the mean of its divisors is an integer number (27914344).

Almost surely, 2^55828687 is an apocalyptic number.

55828687 is a deficient number, since it is larger than the sum of its proper divisors (1).

55828687 is an equidigital number, since it uses as much as digits as its factorization.

55828687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1075200, while the sum is 49.

The square root of 55828687 is about 7471.8596748065. The cubic root of 55828687 is about 382.1957071243.

The spelling of 55828687 in words is "fifty-five million, eight hundred twenty-eight thousand, six hundred eighty-seven".