50668581 has 4 divisors (see below), whose sum is σ = 67558112. Its totient is φ = 33779052.

The previous prime is 50668567. The next prime is 50668591. The reversal of 50668581 is 18586605.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 50668581 - 2¹⁰ = 50667557 is a prime.

It is a super-3 number, since 3×50668581³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50668591) 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, 8444761 + ... + 8444766.

It is an arithmetic number, because the mean of its divisors is an integer number (16889528).

Almost surely, 2^50668581 is an apocalyptic number.

It is an amenable number.

50668581 is a deficient number, since it is larger than the sum of its proper divisors (16889531).

50668581 is a wasteful number, since it uses less digits than its factorization.

50668581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16889530.

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 50668581 is about 7118.1866370586. The cubic root of 50668581 is about 370.0379337782.

The spelling of 50668581 in words is "fifty million, six hundred sixty-eight thousand, five hundred eighty-one".