55825687 has 2 divisors, whose sum is σ = 55825688. Its totient is φ = 55825686.

The previous prime is 55825657. The next prime is 55825709. The reversal of 55825687 is 78652855.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55825687 - 2¹⁹ = 55301399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55825657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27912843 + 27912844.

It is an arithmetic number, because the mean of its divisors is an integer number (27912844).

Almost surely, 2^55825687 is an apocalyptic number.

55825687 is a deficient number, since it is larger than the sum of its proper divisors (1).

55825687 is an equidigital number, since it uses as much as digits as its factorization.

55825687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672000, while the sum is 46.

The square root of 55825687 is about 7471.6589188747. The cubic root of 55825687 is about 382.1888611358.

The spelling of 55825687 in words is "fifty-five million, eight hundred twenty-five thousand, six hundred eighty-seven".