51066392 has 48 divisors (see below), whose sum is σ = 104946840. Its totient is φ = 23282688.

The previous prime is 51066383. The next prime is 51066397. The reversal of 51066392 is 29366015.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51066397) 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 11 ways as a sum of consecutive naturals, for example, 144488 + ... + 144840.

Almost surely, 2^51066392 is an apocalyptic number.

51066392 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51066392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52473420).

51066392 is an abundant number, since it is smaller than the sum of its proper divisors (53880448).

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

51066392 is a wasteful number, since it uses less digits than its factorization.

51066392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492 (or 475 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 51066392 is about 7146.0752864772. The cubic root of 51066392 is about 371.0038287615.

The spelling of 51066392 in words is "fifty-one million, sixty-six thousand, three hundred ninety-two".