50163721 has 4 divisors (see below), whose sum is σ = 50416000. Its totient is φ = 49911444.

The previous prime is 50163709. The next prime is 50163733. The reversal of 50163721 is 12736105.

50163721 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (50163709) and next prime (50163733).

It is a cyclic number.

It is not a de Polignac number, because 50163721 - 2⁷ = 50163593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50163761) 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 3 ways as a sum of consecutive naturals, for example, 125841 + ... + 126238.

It is an arithmetic number, because the mean of its divisors is an integer number (12604000).

Almost surely, 2^50163721 is an apocalyptic number.

It is an amenable number.

50163721 is a deficient number, since it is larger than the sum of its proper divisors (252279).

50163721 is a wasteful number, since it uses less digits than its factorization.

50163721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252278.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 50163721 is about 7082.6351734365. The cubic root of 50163721 is about 368.8048139908.

Adding to 50163721 its reverse (12736105), we get a palindrome (62899826).

The spelling of 50163721 in words is "fifty million, one hundred sixty-three thousand, seven hundred twenty-one".