51482729 has 4 divisors (see below), whose sum is σ = 51963984. Its totient is φ = 51001476.

The previous prime is 51482707. The next prime is 51482731. The reversal of 51482729 is 92728415.

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 51482729 - 2¹⁶ = 51417193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51482692 and 51482701.

It is not an unprimeable number, because it can be changed into a prime (51482759) 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, 240467 + ... + 240680.

It is an arithmetic number, because the mean of its divisors is an integer number (12990996).

Almost surely, 2^51482729 is an apocalyptic number.

It is an amenable number.

51482729 is a deficient number, since it is larger than the sum of its proper divisors (481255).

51482729 is a wasteful number, since it uses less digits than its factorization.

51482729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481254.

The product of its digits is 40320, while the sum is 38.

The square root of 51482729 is about 7175.1466187110. The cubic root of 51482729 is about 372.0093481483.

The spelling of 51482729 in words is "fifty-one million, four hundred eighty-two thousand, seven hundred twenty-nine".