55994481 has 24 divisors (see below), whose sum is σ = 87104160. Its totient is φ = 34532736.

The previous prime is 55994467. The next prime is 55994507. The reversal of 55994481 is 18449955.

55994481 is a `hidden beast` number, since 559 + 94 + 4 + 8 + 1 = 666.

55994481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55994481 - 2⁶ = 55994417 is a prime.

It is a super-2 number, since 2×55994481² = 6270763804918722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55994441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5926 + ... + 12128.

It is an arithmetic number, because the mean of its divisors is an integer number (3629340).

Almost surely, 2^55994481 is an apocalyptic number.

55994481 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

55994481 is a deficient number, since it is larger than the sum of its proper divisors (31109679).

55994481 is a wasteful number, since it uses less digits than its factorization.

55994481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6285 (or 6282 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 55994481 is about 7482.9460107634. The cubic root of 55994481 is about 382.5736677282.

The spelling of 55994481 in words is "fifty-five million, nine hundred ninety-four thousand, four hundred eighty-one".