51683652 has 18 divisors (see below), whose sum is σ = 130644878. Its totient is φ = 17227872.

The previous prime is 51683651. The next prime is 51683717. The reversal of 51683652 is 25638615.

51683652 is a `hidden beast` number, since 516 + 83 + 65 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 46457856 + 5225796 = 6816^2 + 2286^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1435657 = 51683652 / (5 + 1 + 6 + 8 + 3 + 6 + 5 + 2).

It is not an unprimeable number, because it can be changed into a prime (51683651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 717793 + ... + 717864.

Almost surely, 2^51683652 is an apocalyptic number.

It is an amenable number.

51683652 is an abundant number, since it is smaller than the sum of its proper divisors (78961226).

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

51683652 is a wasteful number, since it uses less digits than its factorization.

51683652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435667 (or 1435662 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 51683652 is about 7189.1343011520. The cubic root of 51683652 is about 372.4926701559.

The spelling of 51683652 in words is "fifty-one million, six hundred eighty-three thousand, six hundred fifty-two".