55825879 has 2 divisors, whose sum is σ = 55825880. Its totient is φ = 55825878.

The previous prime is 55825871. The next prime is 55825901. The reversal of 55825879 is 97852855.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55825879 - 2³ = 55825871 is a prime.

It is a super-2 number, since 2×55825879² = 6233057532245282, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55825871) 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, 27912939 + 27912940.

It is an arithmetic number, because the mean of its divisors is an integer number (27912940).

Almost surely, 2^55825879 is an apocalyptic number.

55825879 is a deficient number, since it is larger than the sum of its proper divisors (1).

55825879 is an equidigital number, since it uses as much as digits as its factorization.

55825879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008000, while the sum is 49.

The square root of 55825879 is about 7471.6717674159. The cubic root of 55825879 is about 382.1892992864.

The spelling of 55825879 in words is "fifty-five million, eight hundred twenty-five thousand, eight hundred seventy-nine".