55212206 has 32 divisors (see below), whose sum is σ = 96761280. Its totient is φ = 23141376.

The previous prime is 55212203. The next prime is 55212217. The reversal of 55212206 is 60221255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55212203) 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, 147836 + ... + 148208.

It is an arithmetic number, because the mean of its divisors is an integer number (3023790).

Almost surely, 2^55212206 is an apocalyptic number.

55212206 is a deficient number, since it is larger than the sum of its proper divisors (41549074).

55212206 is a wasteful number, since it uses less digits than its factorization.

55212206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 55212206 is about 7430.4916391851. The cubic root of 55212206 is about 380.7837149590.

The spelling of 55212206 in words is "fifty-five million, two hundred twelve thousand, two hundred six".