55806066 has 24 divisors (see below), whose sum is σ = 121050540. Its totient is φ = 18580896.

The previous prime is 55806041. The next prime is 55806077. The reversal of 55806066 is 66060855.

It can be written as a sum of positive squares in 2 ways, for example, as 52490025 + 3316041 = 7245^2 + 1821^2 .

It is a super-2 number, since 2×55806066² = 6228634004792712, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55806066.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30300 + ... + 32088.

Almost surely, 2^55806066 is an apocalyptic number.

55806066 is an abundant number, since it is smaller than the sum of its proper divisors (65244474).

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

55806066 is a wasteful number, since it uses less digits than its factorization.

55806066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530 (or 3527 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 55806066 is about 7470.3457751298. The cubic root of 55806066 is about 382.1440800397.

The spelling of 55806066 in words is "fifty-five million, eight hundred six thousand, sixty-six".