505945972 has 18 divisors (see below), whose sum is σ = 1029961842. Its totient is φ = 216833904.

The previous prime is 505945967. The next prime is 505945981. The reversal of 505945972 is 279549505.

It can be written as a sum of positive squares in only one way, i.e., 489913956 + 16032016 = 22134^2 + 4004^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1290483 + ... + 1290874.

Almost surely, 2^505945972 is an apocalyptic number.

It is an amenable number.

505945972 is an abundant number, since it is smaller than the sum of its proper divisors (524015870).

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

505945972 is a wasteful number, since it uses less digits than its factorization.

505945972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581375 (or 2581366 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 46.

The square root of 505945972 is about 22493.2428075633. The cubic root of 505945972 is about 796.8343502668.

The spelling of 505945972 in words is "five hundred five million, nine hundred forty-five thousand, nine hundred seventy-two".