50412721 has 4 divisors (see below), whose sum is σ = 50456944. Its totient is φ = 50368500.

The previous prime is 50412707. The next prime is 50412737. The reversal of 50412721 is 12721405.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12721405 = 5 ⋅2544281.

It is a cyclic number.

It is not a de Polignac number, because 50412721 - 2⁵ = 50412689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50412692 and 50412701.

It is not an unprimeable number, because it can be changed into a prime (50412751) 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 3 ways as a sum of consecutive naturals, for example, 20355 + ... + 22696.

It is an arithmetic number, because the mean of its divisors is an integer number (12614236).

Almost surely, 2^50412721 is an apocalyptic number.

It is an amenable number.

50412721 is a deficient number, since it is larger than the sum of its proper divisors (44223).

50412721 is a wasteful number, since it uses less digits than its factorization.

50412721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44222.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 50412721 is about 7100.1916171326. The cubic root of 50412721 is about 369.4140249919.

It can be divided in two parts, 504 and 12721, that added together give a square (13225 = 115²).

The spelling of 50412721 in words is "fifty million, four hundred twelve thousand, seven hundred twenty-one".