51233604 has 96 divisors (see below), whose sum is σ = 133297920. Its totient is φ = 15257088.

The previous prime is 51233591. The next prime is 51233617. The reversal of 51233604 is 40633215.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51233591) and next prime (51233617).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 296062 + ... + 296234.

It is an arithmetic number, because the mean of its divisors is an integer number (1388520).

Almost surely, 2^51233604 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 51233604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66648960).

51233604 is an abundant number, since it is smaller than the sum of its proper divisors (82064316).

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

51233604 is a wasteful number, since it uses less digits than its factorization.

51233604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 51233604 is about 7157.7652937212. The cubic root of 51233604 is about 371.4083263973.

Adding to 51233604 its reverse (40633215), we get a palindrome (91866819).

The spelling of 51233604 in words is "fifty-one million, two hundred thirty-three thousand, six hundred four".