50126721 has 12 divisors (see below), whose sum is σ = 69065136. Its totient is φ = 32337960.

The previous prime is 50126719. The next prime is 50126737. The reversal of 50126721 is 12762105.

It is not a de Polignac number, because 50126721 - 2¹ = 50126719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 50126691 and 50126700.

It is not an unprimeable number, because it can be changed into a prime (50126221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5811 + ... + 11576.

It is an arithmetic number, because the mean of its divisors is an integer number (5755428).

Almost surely, 2^50126721 is an apocalyptic number.

It is an amenable number.

50126721 is a deficient number, since it is larger than the sum of its proper divisors (18938415).

50126721 is a wasteful number, since it uses less digits than its factorization.

50126721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17452 (or 17421 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 50126721 is about 7080.0226694552. The cubic root of 50126721 is about 368.7141167419.

Adding to 50126721 its reverse (12762105), we get a palindrome (62888826).

The spelling of 50126721 in words is "fifty million, one hundred twenty-six thousand, seven hundred twenty-one".