51666524 has 24 divisors (see below), whose sum is σ = 111282528. Its totient is φ = 20439360.

The previous prime is 51666499. The next prime is 51666539. The reversal of 51666524 is 42566615.

51666524 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 70607 + ... + 71334.

It is an arithmetic number, because the mean of its divisors is an integer number (4636772).

Almost surely, 2^51666524 is an apocalyptic number.

It is an amenable number.

51666524 is an abundant number, since it is smaller than the sum of its proper divisors (59616004).

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

51666524 is a wasteful number, since it uses less digits than its factorization.

51666524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141965 (or 141963 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 51666524 is about 7187.9429602634. The cubic root of 51666524 is about 372.4515174953.

Subtracting from 51666524 its reverse (42566615), we obtain a palindrome (9099909).

The spelling of 51666524 in words is "fifty-one million, six hundred sixty-six thousand, five hundred twenty-four".