51290769 has 8 divisors (see below), whose sum is σ = 70236160. Its totient is φ = 33269616.

The previous prime is 51290761. The next prime is 51290773. The reversal of 51290769 is 96709215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51290769 - 2³ = 51290761 is a prime.

It is a super-2 number, since 2×51290769² = 5261485969222722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51290761) 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 7 ways as a sum of consecutive naturals, for example, 230929 + ... + 231150.

It is an arithmetic number, because the mean of its divisors is an integer number (8779520).

Almost surely, 2^51290769 is an apocalyptic number.

It is an amenable number.

51290769 is a deficient number, since it is larger than the sum of its proper divisors (18945391).

51290769 is a wasteful number, since it uses less digits than its factorization.

51290769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462119.

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 51290769 is about 7161.7573960586. The cubic root of 51290769 is about 371.5464106733.

The spelling of 51290769 in words is "fifty-one million, two hundred ninety thousand, seven hundred sixty-nine".