55934991 has 24 divisors (see below), whose sum is σ = 93077504. Its totient is φ = 31706640.

The previous prime is 55934971. The next prime is 55935023. The reversal of 55934991 is 19943955.

It is a happy number.

55934991 is a `hidden beast` number, since 559 + 3 + 4 + 9 + 91 = 666.

It is not a de Polignac number, because 55934991 - 2⁶ = 55934927 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55934971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4506 + ... + 11496.

Almost surely, 2^55934991 is an apocalyptic number.

55934991 is a deficient number, since it is larger than the sum of its proper divisors (37142513).

55934991 is a wasteful number, since it uses less digits than its factorization.

55934991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7131 (or 7128 counting only the distinct ones).

The product of its digits is 218700, while the sum is 45.

The square root of 55934991 is about 7478.9699157036. The cubic root of 55934991 is about 382.4381342978.

The spelling of 55934991 in words is "fifty-five million, nine hundred thirty-four thousand, nine hundred ninety-one".