55066100 has 18 divisors (see below), whose sum is σ = 119493654. Its totient is φ = 22026400.

The previous prime is 55066069. The next prime is 55066129. The reversal of 55066100 is 166055.

It can be written as a sum of positive squares in 3 ways, for example, as 2155024 + 52911076 = 1468^2 + 7274^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 275231 + ... + 275430.

Almost surely, 2^55066100 is an apocalyptic number.

55066100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55066100 is an abundant number, since it is smaller than the sum of its proper divisors (64427554).

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

55066100 is a wasteful number, since it uses less digits than its factorization.

55066100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550675 (or 550668 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 55066100 is about 7420.6536100265. The cubic root of 55066100 is about 380.4475336655.

The spelling of 55066100 in words is "fifty-five million, sixty-six thousand, one hundred".