50510991 has 8 divisors (see below), whose sum is σ = 67605120. Its totient is φ = 33545432.

The previous prime is 50510981. The next prime is 50511007. The reversal of 50510991 is 19901505.

50510991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 50510991 - 2⁵ = 50510959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50510951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31221 + ... + 32798.

It is an arithmetic number, because the mean of its divisors is an integer number (8450640).

Almost surely, 2^50510991 is an apocalyptic number.

50510991 is a deficient number, since it is larger than the sum of its proper divisors (17094129).

50510991 is a wasteful number, since it uses less digits than its factorization.

50510991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64285.

The product of its (nonzero) digits is 2025, while the sum is 30.

The square root of 50510991 is about 7107.1084837647. The cubic root of 50510991 is about 369.6539032929.

The spelling of 50510991 in words is "fifty million, five hundred ten thousand, nine hundred ninety-one".