55161768 has 32 divisors (see below), whose sum is σ = 138468960. Its totient is φ = 18312000.

The previous prime is 55161763. The next prime is 55161781. The reversal of 55161768 is 86716155.

55161768 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (55161761) 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 7 ways as a sum of consecutive naturals, for example, 1446 + ... + 10602.

It is an arithmetic number, because the mean of its divisors is an integer number (4327155).

Almost surely, 2^55161768 is an apocalyptic number.

It is an amenable number.

55161768 is an abundant number, since it is smaller than the sum of its proper divisors (83307192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55161768 is a wasteful number, since it uses less digits than its factorization.

55161768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9417 (or 9413 counting only the distinct ones).

The product of its digits is 50400, while the sum is 39.

The square root of 55161768 is about 7427.0968756305. The cubic root of 55161768 is about 380.6677271984.

The spelling of 55161768 in words is "fifty-five million, one hundred sixty-one thousand, seven hundred sixty-eight".