55947790 has 8 divisors (see below), whose sum is σ = 100706040. Its totient is φ = 22379112.

The previous prime is 55947779. The next prime is 55947791. The reversal of 55947790 is 9774955.

It is a happy number.

55947790 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 55947790.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55947791) 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 3 ways as a sum of consecutive naturals, for example, 2797380 + ... + 2797399.

It is an arithmetic number, because the mean of its divisors is an integer number (12588255).

Almost surely, 2^55947790 is an apocalyptic number.

55947790 is a deficient number, since it is larger than the sum of its proper divisors (44758250).

55947790 is a wasteful number, since it uses less digits than its factorization.

55947790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5594786.

The product of its (nonzero) digits is 396900, while the sum is 46.

The square root of 55947790 is about 7479.8255327247. The cubic root of 55947790 is about 382.4673018028.

The spelling of 55947790 in words is "fifty-five million, nine hundred forty-seven thousand, seven hundred ninety".