55819773 has 12 divisors (see below), whose sum is σ = 83615168. Its totient is φ = 37213020.

The previous prime is 55819763. The next prime is 55819783. The reversal of 55819773 is 37791855.

55819773 is a `hidden beast` number, since 558 + 1 + 97 + 7 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (55819763) and next prime (55819783).

It is not a de Polignac number, because 55819773 - 2⁹ = 55819261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55819733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114613 + ... + 115098.

Almost surely, 2^55819773 is an apocalyptic number.

It is an amenable number.

55819773 is a deficient number, since it is larger than the sum of its proper divisors (27795395).

55819773 is an equidigital number, since it uses as much as digits as its factorization.

55819773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229726 (or 229714 counting only the distinct ones).

The product of its digits is 264600, while the sum is 45.

The square root of 55819773 is about 7471.2631462156. The cubic root of 55819773 is about 382.1753646920.

The spelling of 55819773 in words is "fifty-five million, eight hundred nineteen thousand, seven hundred seventy-three".