51828531 has 4 divisors (see below), whose sum is σ = 69104712. Its totient is φ = 34552352.

The previous prime is 51828521. The next prime is 51828547. The reversal of 51828531 is 13582815.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51828531 - 2¹⁰ = 51827507 is a prime.

It is a super-2 number, since 2×51828531² = 5372393251235922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51828492 and 51828501.

It is not an unprimeable number, because it can be changed into a prime (51828521) 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, 8638086 + ... + 8638091.

It is an arithmetic number, because the mean of its divisors is an integer number (17276178).

Almost surely, 2^51828531 is an apocalyptic number.

51828531 is a deficient number, since it is larger than the sum of its proper divisors (17276181).

51828531 is a wasteful number, since it uses less digits than its factorization.

51828531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17276180.

The product of its digits is 9600, while the sum is 33.

The square root of 51828531 is about 7199.2034976100. The cubic root of 51828531 is about 372.8404011172.

The spelling of 51828531 in words is "fifty-one million, eight hundred twenty-eight thousand, five hundred thirty-one".