55835993 has 2 divisors, whose sum is σ = 55835994. Its totient is φ = 55835992.

The previous prime is 55835987. The next prime is 55836023. The reversal of 55835993 is 39953855.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42094144 + 13741849 = 6488^2 + 3707^2 .

It is a cyclic number.

It is not a de Polignac number, because 55835993 - 2¹⁰ = 55834969 is a prime.

It is a super-2 number, since 2×55835993² = 6235316228592098, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55835393) 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, 27917996 + 27917997.

It is an arithmetic number, because the mean of its divisors is an integer number (27917997).

Almost surely, 2^55835993 is an apocalyptic number.

It is an amenable number.

55835993 is a deficient number, since it is larger than the sum of its proper divisors (1).

55835993 is an equidigital number, since it uses as much as digits as its factorization.

55835993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 729000, while the sum is 47.

The square root of 55835993 is about 7472.3485598572. The cubic root of 55835993 is about 382.2123783627.

The spelling of 55835993 in words is "fifty-five million, eight hundred thirty-five thousand, nine hundred ninety-three".