55166237 has 4 divisors (see below), whose sum is σ = 63047136. Its totient is φ = 47285340.

The previous prime is 55166231. The next prime is 55166263. The reversal of 55166237 is 73266155.

55166237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55166237 - 2¹² = 55162141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55166197 and 55166206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55166231) 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, 3940439 + ... + 3940452.

It is an arithmetic number, because the mean of its divisors is an integer number (15761784).

Almost surely, 2^55166237 is an apocalyptic number.

It is an amenable number.

55166237 is a deficient number, since it is larger than the sum of its proper divisors (7880899).

55166237 is an equidigital number, since it uses as much as digits as its factorization.

55166237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7880898.

The product of its digits is 37800, while the sum is 35.

The square root of 55166237 is about 7427.3977273336. The cubic root of 55166237 is about 380.6780070123.

The spelling of 55166237 in words is "fifty-five million, one hundred sixty-six thousand, two hundred thirty-seven".