50643655 has 4 divisors (see below), whose sum is σ = 60772392. Its totient is φ = 40514920.

The previous prime is 50643613. The next prime is 50643727. The reversal of 50643655 is 55634605.

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

It is not a de Polignac number, because 50643655 - 2¹³ = 50635463 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50643655.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5064361 + ... + 5064370.

It is an arithmetic number, because the mean of its divisors is an integer number (15193098).

Almost surely, 2^50643655 is an apocalyptic number.

50643655 is a deficient number, since it is larger than the sum of its proper divisors (10128737).

50643655 is a wasteful number, since it uses less digits than its factorization.

50643655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10128736.

The product of its (nonzero) digits is 54000, while the sum is 34.

The square root of 50643655 is about 7116.4355544050. The cubic root of 50643655 is about 369.9772447657.

The spelling of 50643655 in words is "fifty million, six hundred forty-three thousand, six hundred fifty-five".