50213561 has 16 divisors (see below), whose sum is σ = 54949440. Its totient is φ = 45722880.

The previous prime is 50213557. The next prime is 50213567. The reversal of 50213561 is 16531205.

It is a cyclic number.

It is not a de Polignac number, because 50213561 - 2² = 50213557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50213567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56426 + ... + 57308.

It is an arithmetic number, because the mean of its divisors is an integer number (3434340).

Almost surely, 2^50213561 is an apocalyptic number.

It is an amenable number.

50213561 is a deficient number, since it is larger than the sum of its proper divisors (4735879).

50213561 is a wasteful number, since it uses less digits than its factorization.

50213561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 50213561 is about 7086.1527643708. The cubic root of 50213561 is about 368.9269151653.

Adding to 50213561 its reverse (16531205), we get a palindrome (66744766).

The spelling of 50213561 in words is "fifty million, two hundred thirteen thousand, five hundred sixty-one".