50493721 has 8 divisors (see below), whose sum is σ = 50923080. Its totient is φ = 50066688.

The previous prime is 50493713. The next prime is 50493743. The reversal of 50493721 is 12739405.

It can be written as a sum of positive squares in 4 ways, for example, as 2676496 + 47817225 = 1636^2 + 6915^2 .

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 50493721 - 2³ = 50493713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50493701) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 90375 + ... + 90931.

It is an arithmetic number, because the mean of its divisors is an integer number (6365385).

Almost surely, 2^50493721 is an apocalyptic number.

It is an amenable number.

50493721 is a deficient number, since it is larger than the sum of its proper divisors (429359).

50493721 is a wasteful number, since it uses less digits than its factorization.

50493721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 50493721 is about 7105.8933991441. The cubic root of 50493721 is about 369.6117695547.

The spelling of 50493721 in words is "fifty million, four hundred ninety-three thousand, seven hundred twenty-one".