50005531 has 2 divisors, whose sum is σ = 50005532. Its totient is φ = 50005530.

The previous prime is 50005507. The next prime is 50005559. The reversal of 50005531 is 13550005.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50005531 - 2¹¹ = 50003483 is a prime.

It is a super-2 number, since 2×50005531² = 5001106261183922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 50005499 and 50005508.

It is not a weakly prime, because it can be changed into another prime (50008531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25002765 + 25002766.

It is an arithmetic number, because the mean of its divisors is an integer number (25002766).

Almost surely, 2^50005531 is an apocalyptic number.

50005531 is a deficient number, since it is larger than the sum of its proper divisors (1).

50005531 is an equidigital number, since it uses as much as digits as its factorization.

50005531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 375, while the sum is 19.

The square root of 50005531 is about 7071.4589018109. The cubic root of 50005531 is about 368.4167336153.

Adding to 50005531 its reverse (13550005), we get a palindrome (63555536).

The spelling of 50005531 in words is "fifty million, five thousand, five hundred thirty-one".