51533793 has 8 divisors (see below), whose sum is σ = 76346400. Its totient is φ = 34355844.

The previous prime is 51533789. The next prime is 51533803. The reversal of 51533793 is 39733515.

It is a happy number.

51533793 is a `hidden beast` number, since 51 + 533 + 79 + 3 = 666.

51533793 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51533793 - 2² = 51533789 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51533743) 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 7 ways as a sum of consecutive naturals, for example, 954303 + ... + 954356.

It is an arithmetic number, because the mean of its divisors is an integer number (9543300).

Almost surely, 2^51533793 is an apocalyptic number.

It is an amenable number.

51533793 is a deficient number, since it is larger than the sum of its proper divisors (24812607).

51533793 is a wasteful number, since it uses less digits than its factorization.

51533793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908668 (or 1908662 counting only the distinct ones).

The product of its digits is 42525, while the sum is 36.

The square root of 51533793 is about 7178.7041309696. The cubic root of 51533793 is about 372.1323020566.

It can be divided in two parts, 51533 and 793, that added together give a triangular number (52326 = T₃₂₃).

The spelling of 51533793 in words is "fifty-one million, five hundred thirty-three thousand, seven hundred ninety-three".