50000055531 has 4 divisors (see below), whose sum is σ = 66666740712. Its totient is φ = 33333370352.

The previous prime is 50000055499. The next prime is 50000055551. The reversal of 50000055531 is 13555000005.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 50000055531 - 2⁵ = 50000055499 is a prime.

It is a super-2 number, since 2×50000055531² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (50000055551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8333342586 + ... + 8333342591.

It is an arithmetic number, because the mean of its divisors is an integer number (16666685178).

Almost surely, 2^50000055531 is an apocalyptic number.

50000055531 is a deficient number, since it is larger than the sum of its proper divisors (16666685181).

50000055531 is a wasteful number, since it uses less digits than its factorization.

50000055531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16666685180.

The product of its (nonzero) digits is 1875, while the sum is 24.

Adding to 50000055531 its reverse (13555000005), we get a palindrome (63555055536).

The spelling of 50000055531 in words is "fifty billion, fifty-five thousand, five hundred thirty-one".