51057769 has 16 divisors (see below), whose sum is σ = 64097280. Its totient is φ = 39655440.

The previous prime is 51057767. The next prime is 51057827. The reversal of 51057769 is 96775015.

It is a cyclic number.

It is not a de Polignac number, because 51057769 - 2¹ = 51057767 is a prime.

It is a super-2 number, since 2×51057769² = 5213791550514722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51057761) 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, 5287 + ... + 11404.

It is an arithmetic number, because the mean of its divisors is an integer number (4006080).

Almost surely, 2^51057769 is an apocalyptic number.

It is an amenable number.

51057769 is a deficient number, since it is larger than the sum of its proper divisors (13039511).

51057769 is a wasteful number, since it uses less digits than its factorization.

51057769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16740.

The product of its (nonzero) digits is 66150, while the sum is 40.

The square root of 51057769 is about 7145.4719228334. The cubic root of 51057769 is about 370.9829451890.

The spelling of 51057769 in words is "fifty-one million, fifty-seven thousand, seven hundred sixty-nine".