51775305 has 16 divisors (see below), whose sum is σ = 83773440. Its totient is φ = 27302528.

The previous prime is 51775291. The next prime is 51775307. The reversal of 51775305 is 50357715.

It is a cyclic number.

It is not a de Polignac number, because 51775305 - 2⁴ = 51775289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51775307) 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, 18057 + ... + 20726.

It is an arithmetic number, because the mean of its divisors is an integer number (5235840).

Almost surely, 2^51775305 is an apocalyptic number.

It is an amenable number.

51775305 is a deficient number, since it is larger than the sum of its proper divisors (31998135).

51775305 is a wasteful number, since it uses less digits than its factorization.

51775305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38880.

The product of its (nonzero) digits is 18375, while the sum is 33.

The square root of 51775305 is about 7195.5058890949. The cubic root of 51775305 is about 372.7127262634.

The spelling of 51775305 in words is "fifty-one million, seven hundred seventy-five thousand, three hundred five".