505667172 has 24 divisors (see below), whose sum is σ = 1204995456. Its totient is φ = 164969248.

The previous prime is 505667119. The next prime is 505667177. The reversal of 505667172 is 271766505.

It is a self number, because there is not a number n which added to its sum of digits gives 505667172.

It is not an unprimeable number, because it can be changed into a prime (505667177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 447723 + ... + 448850.

It is an arithmetic number, because the mean of its divisors is an integer number (50208144).

Almost surely, 2^505667172 is an apocalyptic number.

It is an amenable number.

505667172 is an abundant number, since it is smaller than the sum of its proper divisors (699328284).

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

505667172 is a wasteful number, since it uses less digits than its factorization.

505667172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896627 (or 896625 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 39.

The square root of 505667172 is about 22487.0445367994. The cubic root of 505667172 is about 796.6879589866.

The spelling of 505667172 in words is "five hundred five million, six hundred sixty-seven thousand, one hundred seventy-two".