51765393 has 16 divisors (see below), whose sum is σ = 70566912. Its totient is φ = 33744000.

The previous prime is 51765379. The next prime is 51765401. The reversal of 51765393 is 39356715.

It is not a de Polignac number, because 51765393 - 2⁸ = 51765137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51765353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34213 + ... + 35693.

It is an arithmetic number, because the mean of its divisors is an integer number (4410432).

Almost surely, 2^51765393 is an apocalyptic number.

It is an amenable number.

51765393 is a deficient number, since it is larger than the sum of its proper divisors (18801519).

51765393 is a wasteful number, since it uses less digits than its factorization.

51765393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736.

The product of its digits is 85050, while the sum is 39.

The square root of 51765393 is about 7194.8170928801. The cubic root of 51765393 is about 372.6889403786.

The spelling of 51765393 in words is "fifty-one million, seven hundred sixty-five thousand, three hundred ninety-three".