51804628 has 12 divisors (see below), whose sum is σ = 90717172. Its totient is φ = 25885440.

The previous prime is 51804611. The next prime is 51804629. The reversal of 51804628 is 82640815.

It can be written as a sum of positive squares in 2 ways, for example, as 29789764 + 22014864 = 5458^2 + 4692^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51804593 and 51804602.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4858 + ... + 11278.

Almost surely, 2^51804628 is an apocalyptic number.

It is an amenable number.

51804628 is a deficient number, since it is larger than the sum of its proper divisors (38912544).

51804628 is a wasteful number, since it uses less digits than its factorization.

51804628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8442 (or 8440 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 51804628 is about 7197.5431919510. The cubic root of 51804628 is about 372.7830750696.

The spelling of 51804628 in words is "fifty-one million, eight hundred four thousand, six hundred twenty-eight".