50630021 has 8 divisors (see below), whose sum is σ = 54580344. Its totient is φ = 46687680.

The previous prime is 50630017. The next prime is 50630033. The reversal of 50630021 is 12003605.

It can be written as a sum of positive squares in 4 ways, for example, as 21025 + 50608996 = 145^2 + 7114^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 50630021 - 2² = 50630017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50630011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21515 + ... + 23751.

It is an arithmetic number, because the mean of its divisors is an integer number (6822543).

Almost surely, 2^50630021 is an apocalyptic number.

It is an amenable number.

50630021 is a deficient number, since it is larger than the sum of its proper divisors (3950323).

50630021 is a wasteful number, since it uses less digits than its factorization.

50630021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3991.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 50630021 is about 7115.4775665446. The cubic root of 50630021 is about 369.9440407214.

Adding to 50630021 its reverse (12003605), we get a palindrome (62633626).

The spelling of 50630021 in words is "fifty million, six hundred thirty thousand, twenty-one".