505165604 has 6 divisors (see below), whose sum is σ = 884039814. Its totient is φ = 252582800.

The previous prime is 505165601. The next prime is 505165607. The reversal of 505165604 is 406561505.

It is an interprime number because it is at equal distance from previous prime (505165601) and next prime (505165607).

It can be written as a sum of positive squares in only one way, i.e., 466128100 + 39037504 = 21590^2 + 6248^2 .

It is not an unprimeable number, because it can be changed into a prime (505165601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63145697 + ... + 63145704.

It is an arithmetic number, because the mean of its divisors is an integer number (147339969).

Almost surely, 2^505165604 is an apocalyptic number.

It is an amenable number.

505165604 is a deficient number, since it is larger than the sum of its proper divisors (378874210).

505165604 is a wasteful number, since it uses less digits than its factorization.

505165604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126291405 (or 126291403 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 505165604 is about 22475.8893928583. The cubic root of 505165604 is about 796.4244619677.

The spelling of 505165604 in words is "five hundred five million, one hundred sixty-five thousand, six hundred four".