50404291081 has 9 divisors (see below), whose sum is σ = 50628217549. Its totient is φ = 50181353644.

The previous prime is 50404291051. The next prime is 50404291109. The reversal of 50404291081 is 18019240405.

It is a happy number.

The square root of 50404291081 is 224509.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 50404291081 - 2¹⁹ = 50403766793 is a prime.

It is a super-2 number, since 2×50404291081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50404291051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 77904300 + ... + 77904946.

Almost surely, 2^50404291081 is an apocalyptic number.

50404291081 is the 224509-th square number.

50404291081 is the 112255-th centered octagonal number.

It is an amenable number.

50404291081 is a deficient number, since it is larger than the sum of its proper divisors (223926468).

50404291081 is an frugal number, since it uses more digits than its factorization.

50404291081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988 (or 994 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The spelling of 50404291081 in words is "fifty billion, four hundred four million, two hundred ninety-one thousand, eighty-one".