55317370 has 16 divisors (see below), whose sum is σ = 100333728. Its totient is φ = 21957520.

The previous prime is 55317359. The next prime is 55317377. The reversal of 55317370 is 7371355.

It is a happy number.

55317370 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55317370² = 6120022847433800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55317377) 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, 19804 + ... + 22423.

It is an arithmetic number, because the mean of its divisors is an integer number (6270858).

Almost surely, 2^55317370 is an apocalyptic number.

55317370 is a deficient number, since it is larger than the sum of its proper divisors (45016358).

55317370 is a wasteful number, since it uses less digits than its factorization.

55317370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42365.

The product of its (nonzero) digits is 11025, while the sum is 31.

The square root of 55317370 is about 7437.5647896338. The cubic root of 55317370 is about 381.0253242192.

The spelling of 55317370 in words is "fifty-five million, three hundred seventeen thousand, three hundred seventy".