55788819 has 8 divisors (see below), whose sum is σ = 74431632. Its totient is φ = 37169280.

The previous prime is 55788797. The next prime is 55788829. The reversal of 55788819 is 91888755.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55788819 - 2⁵ = 55788787 is a prime.

It is a super-2 number, since 2×55788819² = 6224784650829522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55788829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 879 + ... + 10599.

It is an arithmetic number, because the mean of its divisors is an integer number (9303954).

Almost surely, 2^55788819 is an apocalyptic number.

55788819 is a deficient number, since it is larger than the sum of its proper divisors (18642813).

55788819 is a wasteful number, since it uses less digits than its factorization.

55788819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11637.

The product of its digits is 806400, while the sum is 51.

The square root of 55788819 is about 7469.1913216894. The cubic root of 55788819 is about 382.1047084653.

The spelling of 55788819 in words is "fifty-five million, seven hundred eighty-eight thousand, eight hundred nineteen".