51533230 has 64 divisors (see below), whose sum is σ = 110512512. Its totient is φ = 16934400.

The previous prime is 51533219. The next prime is 51533231. The reversal of 51533230 is 3233515.

It is a happy number.

51533230 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 (51533231) 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 31 ways as a sum of consecutive naturals, for example, 261492 + ... + 261688.

It is an arithmetic number, because the mean of its divisors is an integer number (1726758).

Almost surely, 2^51533230 is an apocalyptic number.

51533230 is an abundant number, since it is smaller than the sum of its proper divisors (58979282).

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

51533230 is a wasteful number, since it uses less digits than its factorization.

51533230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349.

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 51533230 is about 7178.6649176570. The cubic root of 51533230 is about 372.1309468860.

Adding to 51533230 its reverse (3233515), we get a palindrome (54766745).

The spelling of 51533230 in words is "fifty-one million, five hundred thirty-three thousand, two hundred thirty".