55167720 has 64 divisors (see below), whose sum is σ = 175245120. Its totient is φ = 13845504.

The previous prime is 55167719. The next prime is 55167743. The reversal of 55167720 is 2776155.

55167720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11482 + ... + 15561.

It is an arithmetic number, because the mean of its divisors is an integer number (2738205).

Almost surely, 2^55167720 is an apocalyptic number.

It is an amenable number.

55167720 is an abundant number, since it is smaller than the sum of its proper divisors (120077400).

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

55167720 is a wasteful number, since it uses less digits than its factorization.

55167720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27074 (or 27070 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 33.

The square root of 55167720 is about 7427.4975597438. The cubic root of 55167720 is about 380.6814181593.

The spelling of 55167720 in words is "fifty-five million, one hundred sixty-seven thousand, seven hundred twenty".