51804624 has 40 divisors (see below), whose sum is σ = 135027072. Its totient is φ = 17113600.

The previous prime is 51804611. The next prime is 51804629. The reversal of 51804624 is 42640815.

51804624 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 51804591 and 51804600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51804629) 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 7 ways as a sum of consecutive naturals, for example, 649 + ... + 10199.

Almost surely, 2^51804624 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 51804624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67513536).

51804624 is an abundant number, since it is smaller than the sum of its proper divisors (83222448).

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

51804624 is a wasteful number, since it uses less digits than its factorization.

51804624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9675 (or 9669 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 51804624 is about 7197.5429140784. The cubic root of 51804624 is about 372.7830654750.

The spelling of 51804624 in words is "fifty-one million, eight hundred four thousand, six hundred twenty-four".