55201866 has 16 divisors (see below), whose sum is σ = 110901504. Its totient is φ = 18317664.

The previous prime is 55201849. The next prime is 55201879. The reversal of 55201866 is 66810255.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19291 + ... + 21966.

It is an arithmetic number, because the mean of its divisors is an integer number (6931344).

Almost surely, 2^55201866 is an apocalyptic number.

55201866 is an abundant number, since it is smaller than the sum of its proper divisors (55699638).

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

55201866 is a wasteful number, since it uses less digits than its factorization.

55201866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41485.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 55201866 is about 7429.7958249201. The cubic root of 55201866 is about 380.7599427432.

The spelling of 55201866 in words is "fifty-five million, two hundred one thousand, eight hundred sixty-six".