55788081 has 4 divisors (see below), whose sum is σ = 74384112. Its totient is φ = 37192052.

The previous prime is 55788059. The next prime is 55788121. The reversal of 55788081 is 18088755.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55788081 - 2⁵ = 55788049 is a prime.

It is a super-2 number, since 2×55788081² = 6224619963325122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55788281) 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 3 ways as a sum of consecutive naturals, for example, 9298011 + ... + 9298016.

It is an arithmetic number, because the mean of its divisors is an integer number (18596028).

Almost surely, 2^55788081 is an apocalyptic number.

It is an amenable number.

55788081 is a deficient number, since it is larger than the sum of its proper divisors (18596031).

55788081 is a wasteful number, since it uses less digits than its factorization.

55788081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18596030.

The product of its (nonzero) digits is 89600, while the sum is 42.

The square root of 55788081 is about 7469.1419185874. The cubic root of 55788081 is about 382.1030235726.

The spelling of 55788081 in words is "fifty-five million, seven hundred eighty-eight thousand, eighty-one".