51432380 has 12 divisors (see below), whose sum is σ = 108008040. Its totient is φ = 20572944.

The previous prime is 51432371. The next prime is 51432383. The reversal of 51432380 is 8323415.

51432380 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 not an unprimeable number, because it can be changed into a prime (51432383) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1285790 + ... + 1285829.

It is an arithmetic number, because the mean of its divisors is an integer number (9000670).

Almost surely, 2^51432380 is an apocalyptic number.

It is an amenable number.

51432380 is an abundant number, since it is smaller than the sum of its proper divisors (56575660).

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

51432380 is a wasteful number, since it uses less digits than its factorization.

51432380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2571628 (or 2571626 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 51432380 is about 7171.6371910464. The cubic root of 51432380 is about 371.8880362165. Note that the first 3 decimals are identical.

Adding to 51432380 its reverse (8323415), we get a palindrome (59755795).

The spelling of 51432380 in words is "fifty-one million, four hundred thirty-two thousand, three hundred eighty".