51775767 has 14 divisors (see below), whose sum is σ = 77629232. Its totient is φ = 34516692.

The previous prime is 51775751. The next prime is 51775769. The reversal of 51775767 is 76757715.

51775767 is a `hidden beast` number, since 5 + 1 + 77 + 576 + 7 = 666.

It is not a de Polignac number, because 51775767 - 2⁴ = 51775751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51775769) 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 13 ways as a sum of consecutive naturals, for example, 34783 + ... + 36240.

Almost surely, 2^51775767 is an apocalyptic number.

51775767 is a deficient number, since it is larger than the sum of its proper divisors (25853465).

51775767 is an frugal number, since it uses more digits than its factorization.

51775767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71041 (or 71026 counting only the distinct ones).

The product of its digits is 360150, while the sum is 45.

The square root of 51775767 is about 7195.5379923950. The cubic root of 51775767 is about 372.7138348534.

The spelling of 51775767 in words is "fifty-one million, seven hundred seventy-five thousand, seven hundred sixty-seven".