51036929 has 4 divisors (see below), whose sum is σ = 51077460. Its totient is φ = 50996400.

The previous prime is 51036917. The next prime is 51036959. The reversal of 51036929 is 92963015.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25230529 + 25806400 = 5023^2 + 5080^2 .

It is a cyclic number.

It is not a de Polignac number, because 51036929 - 2²⁰ = 49988353 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51036959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18314 + ... + 20915.

It is an arithmetic number, because the mean of its divisors is an integer number (12769365).

Almost surely, 2^51036929 is an apocalyptic number.

It is an amenable number.

51036929 is a deficient number, since it is larger than the sum of its proper divisors (40531).

51036929 is a wasteful number, since it uses less digits than its factorization.

51036929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40530.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 51036929 is about 7144.0135078260. The cubic root of 51036929 is about 370.9324642217.

The spelling of 51036929 in words is "fifty-one million, thirty-six thousand, nine hundred twenty-nine".