66132550 has 72 divisors (see below), whose sum is σ = 143381448. Its totient is φ = 22598400.

The previous prime is 66132541. The next prime is 66132617. The reversal of 66132550 is 5523166.

66132550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 102529 + ... + 103171.

It is an arithmetic number, because the mean of its divisors is an integer number (1991409).

Almost surely, 2^66132550 is an apocalyptic number.

66132550 is an abundant number, since it is smaller than the sum of its proper divisors (77248898).

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

66132550 is a wasteful number, since it uses less digits than its factorization.

66132550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 66132550 is about 8132.1922013686. The cubic root of 66132550 is about 404.3943597215.

The spelling of 66132550 in words is "sixty-six million, one hundred thirty-two thousand, five hundred fifty".