505921970 has 16 divisors (see below), whose sum is σ = 911131200. Its totient is φ = 202263984.

The previous prime is 505921951. The next prime is 505921993. The reversal of 505921970 is 79129505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8939 + ... + 33041.

It is an arithmetic number, because the mean of its divisors is an integer number (56945700).

Almost surely, 2^505921970 is an apocalyptic number.

505921970 is a deficient number, since it is larger than the sum of its proper divisors (405209230).

505921970 is a wasteful number, since it uses less digits than its factorization.

505921970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26209.

The product of its (nonzero) digits is 28350, while the sum is 38.

The square root of 505921970 is about 22492.7092632257. The cubic root of 505921970 is about 796.8217495007.

The spelling of 505921970 in words is "five hundred five million, nine hundred twenty-one thousand, nine hundred seventy".