51805084 has 12 divisors (see below), whose sum is σ = 91491400. Its totient is φ = 25664688.

The previous prime is 51805051. The next prime is 51805093. The reversal of 51805084 is 48050815.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58974 + ... + 59845.

Almost surely, 2^51805084 is an apocalyptic number.

It is an amenable number.

51805084 is a deficient number, since it is larger than the sum of its proper divisors (39686316).

51805084 is a wasteful number, since it uses less digits than its factorization.

51805084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118932 (or 118930 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 31.

The square root of 51805084 is about 7197.5748693570. The cubic root of 51805084 is about 372.7841688495.

Adding to 51805084 its reverse (48050815), we get a palindrome (99855899).

The spelling of 51805084 in words is "fifty-one million, eight hundred five thousand, eighty-four".