50999729 has 8 divisors (see below), whose sum is σ = 56177472. Its totient is φ = 45912240.

The previous prime is 50999701. The next prime is 50999789. The reversal of 50999729 is 92799905.

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

It is a de Polignac number, because none of the positive numbers 2^k-50999729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50999789) 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, 21374 + ... + 23639.

It is an arithmetic number, because the mean of its divisors is an integer number (7022184).

Almost surely, 2^50999729 is an apocalyptic number.

It is an amenable number.

50999729 is a deficient number, since it is larger than the sum of its proper divisors (5177743).

50999729 is a wasteful number, since it uses less digits than its factorization.

50999729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45127.

The product of its (nonzero) digits is 459270, while the sum is 50.

The square root of 50999729 is about 7141.4094547225. The cubic root of 50999729 is about 370.8423200729.

The spelling of 50999729 in words is "fifty million, nine hundred ninety-nine thousand, seven hundred twenty-nine".