51442030 has 32 divisors (see below), whose sum is σ = 97210368. Its totient is φ = 19562400.

The previous prime is 51442009. The next prime is 51442043. The reversal of 51442030 is 3024415.

51442030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 51441989 and 51442007.

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 15 ways as a sum of consecutive naturals, for example, 43345 + ... + 44515.

It is an arithmetic number, because the mean of its divisors is an integer number (3037824).

Almost surely, 2^51442030 is an apocalyptic number.

51442030 is a deficient number, since it is larger than the sum of its proper divisors (45768338).

51442030 is a wasteful number, since it uses less digits than its factorization.

51442030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 51442030 is about 7172.3099486846. The cubic root of 51442030 is about 371.9112932589.

Adding to 51442030 its reverse (3024415), we get a palindrome (54466445).

The spelling of 51442030 in words is "fifty-one million, four hundred forty-two thousand, thirty".