501121104 has 80 divisors (see below), whose sum is σ = 1495350720. Its totient is φ = 142919680.

The previous prime is 501121051. The next prime is 501121141. The reversal of 501121104 is 401121105.

It is a happy number.

It is a super-2 number, since 2×501121104² = 502244721748357632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18939 + ... + 36890.

It is an arithmetic number, because the mean of its divisors is an integer number (18691884).

Almost surely, 2^501121104 is an apocalyptic number.

It is an amenable number.

501121104 is an abundant number, since it is smaller than the sum of its proper divisors (994229616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

501121104 is a wasteful number, since it uses less digits than its factorization.

501121104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55868 (or 55862 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 501121104 is about 22385.7343859879. The cubic root of 501121104 is about 794.2932970556.

Adding to 501121104 its reverse (401121105), we get a palindrome (902242209).

Subtracting from 501121104 its reverse (401121105), we obtain a palindrome (99999999).

The spelling of 501121104 in words is "five hundred one million, one hundred twenty-one thousand, one hundred four".