51532304 has 80 divisors (see below), whose sum is σ = 112492800. Its totient is φ = 22751232.

The previous prime is 51532301. The next prime is 51532331. The reversal of 51532304 is 40323515.

It is a self number, because there is not a number n which added to its sum of digits gives 51532304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51532301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 370667 + ... + 370805.

It is an arithmetic number, because the mean of its divisors is an integer number (1406160).

Almost surely, 2^51532304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51532304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56246400).

51532304 is an abundant number, since it is smaller than the sum of its proper divisors (60960496).

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

51532304 is a wasteful number, since it uses less digits than its factorization.

51532304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 51532304 is about 7178.6004206948. The cubic root of 51532304 is about 372.1287179338.

Adding to 51532304 its reverse (40323515), we get a palindrome (91855819).

The spelling of 51532304 in words is "fifty-one million, five hundred thirty-two thousand, three hundred four".