55115782 has 8 divisors (see below), whose sum is σ = 83102616. Its totient is φ = 27414912.

The previous prime is 55115773. The next prime is 55115783. The reversal of 55115782 is 28751155.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55115783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71008 + ... + 71779.

It is an arithmetic number, because the mean of its divisors is an integer number (10387827).

Almost surely, 2^55115782 is an apocalyptic number.

55115782 is a deficient number, since it is larger than the sum of its proper divisors (27986834).

55115782 is a wasteful number, since it uses less digits than its factorization.

55115782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142982.

The product of its digits is 14000, while the sum is 34.

The square root of 55115782 is about 7424.0004040948. Note that the first 3 decimals coincide. The cubic root of 55115782 is about 380.5619156705.

The spelling of 55115782 in words is "fifty-five million, one hundred fifteen thousand, seven hundred eighty-two".