505709012 has 6 divisors (see below), whose sum is σ = 884990778. Its totient is φ = 252854504.

The previous prime is 505709003. The next prime is 505709051. The reversal of 505709012 is 210907505.

It can be written as a sum of positive squares in only one way, i.e., 271129156 + 234579856 = 16466^2 + 15316^2 .

It is a super-2 number, since 2×505709012² = 511483209636032288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63213623 + ... + 63213630.

It is an arithmetic number, because the mean of its divisors is an integer number (147498463).

Almost surely, 2^505709012 is an apocalyptic number.

It is an amenable number.

505709012 is a deficient number, since it is larger than the sum of its proper divisors (379281766).

505709012 is a wasteful number, since it uses less digits than its factorization.

505709012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126427257 (or 126427255 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 29.

The square root of 505709012 is about 22487.9748310069. The cubic root of 505709012 is about 796.7099316112.

The spelling of 505709012 in words is "five hundred five million, seven hundred nine thousand, twelve".