505550120 has 32 divisors (see below), whose sum is σ = 1186945920. Its totient is φ = 193427520.

The previous prime is 505550099. The next prime is 505550153. The reversal of 505550120 is 21055505.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273836 + ... + 275675.

It is an arithmetic number, because the mean of its divisors is an integer number (37092060).

Almost surely, 2^505550120 is an apocalyptic number.

It is an amenable number.

505550120 is an abundant number, since it is smaller than the sum of its proper divisors (681395800).

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

505550120 is a wasteful number, since it uses less digits than its factorization.

505550120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549545 (or 549541 counting only the distinct ones).

The product of its (nonzero) digits is 1250, while the sum is 23.

The square root of 505550120 is about 22484.4417320066. The cubic root of 505550120 is about 796.6264817142.

The spelling of 505550120 in words is "five hundred five million, five hundred fifty thousand, one hundred twenty".