55166207 has 16 divisors (see below), whose sum is σ = 60912000. Its totient is φ = 49728000.

The previous prime is 55166191. The next prime is 55166227. The reversal of 55166207 is 70266155.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 55166207 - 2⁴ = 55166191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55166227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73082 + ... + 73832.

It is an arithmetic number, because the mean of its divisors is an integer number (3807000).

Almost surely, 2^55166207 is an apocalyptic number.

55166207 is a deficient number, since it is larger than the sum of its proper divisors (5745793).

55166207 is a wasteful number, since it uses less digits than its factorization.

55166207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 55166207 is about 7427.3957077834. The cubic root of 55166207 is about 380.6779380067.

The spelling of 55166207 in words is "fifty-five million, one hundred sixty-six thousand, two hundred seven".