55666050 has 72 divisors (see below), whose sum is σ = 151792368. Its totient is φ = 13490400.

The previous prime is 55666043. The next prime is 55666057. The reversal of 55666050 is 5066655.

It is an interprime number because it is at equal distance from previous prime (55666043) and next prime (55666057).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55666057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 16617 + ... + 19683.

Almost surely, 2^55666050 is an apocalyptic number.

55666050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55666050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75896184).

55666050 is an abundant number, since it is smaller than the sum of its proper divisors (96126318).

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

55666050 is a wasteful number, since it uses less digits than its factorization.

55666050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3104 (or 3088 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 55666050 is about 7460.9684357997. The cubic root of 55666050 is about 381.8242157880.

The spelling of 55666050 in words is "fifty-five million, six hundred sixty-six thousand, fifty".