50420155 has 4 divisors (see below), whose sum is σ = 60504192. Its totient is φ = 40336120.

The previous prime is 50420131. The next prime is 50420171. The reversal of 50420155 is 55102405.

50420155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55102405 = 5 ⋅11020481.

It is not a de Polignac number, because 50420155 - 2⁹ = 50419643 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5042011 + ... + 5042020.

It is an arithmetic number, because the mean of its divisors is an integer number (15126048).

Almost surely, 2^50420155 is an apocalyptic number.

50420155 is a deficient number, since it is larger than the sum of its proper divisors (10084037).

50420155 is a wasteful number, since it uses less digits than its factorization.

50420155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10084036.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 50420155 is about 7100.7151048328. The cubic root of 50420155 is about 369.4321823724.

The spelling of 50420155 in words is "fifty million, four hundred twenty thousand, one hundred fifty-five".