51825829 has 4 divisors (see below), whose sum is σ = 56537280. Its totient is φ = 47114380.

The previous prime is 51825821. The next prime is 51825841. The reversal of 51825829 is 92852815.

51825829 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51825829 - 2³ = 51825821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51825791 and 51825800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51825821) 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 3 ways as a sum of consecutive naturals, for example, 2355709 + ... + 2355730.

It is an arithmetic number, because the mean of its divisors is an integer number (14134320).

Almost surely, 2^51825829 is an apocalyptic number.

It is an amenable number.

51825829 is a deficient number, since it is larger than the sum of its proper divisors (4711451).

51825829 is a wasteful number, since it uses less digits than its factorization.

51825829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4711450.

The product of its digits is 57600, while the sum is 40.

The square root of 51825829 is about 7199.0158355153. The cubic root of 51825829 is about 372.8339218528.

It can be divided in two parts, 5182 and 5829, that multiplied together give a triangular number (30205878 = T₇₇₇₂).

The spelling of 51825829 in words is "fifty-one million, eight hundred twenty-five thousand, eight hundred twenty-nine".