51787852 has 12 divisors (see below), whose sum is σ = 93754080. Its totient is φ = 25000976.

The previous prime is 51787847. The next prime is 51787861. The reversal of 51787852 is 25878715.

It is a super-2 number, since 2×51787852² = 5363963229547808, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51787799 and 51787808.

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 3 ways as a sum of consecutive naturals, for example, 223108 + ... + 223339.

It is an arithmetic number, because the mean of its divisors is an integer number (7812840).

Almost surely, 2^51787852 is an apocalyptic number.

It is an amenable number.

51787852 is a deficient number, since it is larger than the sum of its proper divisors (41966228).

51787852 is a wasteful number, since it uses less digits than its factorization.

51787852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446480 (or 446478 counting only the distinct ones).

The product of its digits is 156800, while the sum is 43.

The square root of 51787852 is about 7196.3776999265. The cubic root of 51787852 is about 372.7428310200.

The spelling of 51787852 in words is "fifty-one million, seven hundred eighty-seven thousand, eight hundred fifty-two".