505213177 has 12 divisors (see below), whose sum is σ = 588160656. Its totient is φ = 432698280.

The previous prime is 505213171. The next prime is 505213223. The reversal of 505213177 is 771312505.

It is a de Polignac number, because none of the positive numbers 2^k-505213177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505213171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73698 + ... + 80260.

It is an arithmetic number, because the mean of its divisors is an integer number (49013388).

Almost surely, 2^505213177 is an apocalyptic number.

It is an amenable number.

505213177 is a deficient number, since it is larger than the sum of its proper divisors (82947479).

505213177 is a wasteful number, since it uses less digits than its factorization.

505213177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8148 (or 8141 counting only the distinct ones).

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 505213177 is about 22476.9476797896. The cubic root of 505213177 is about 796.4494617641.

The spelling of 505213177 in words is "five hundred five million, two hundred thirteen thousand, one hundred seventy-seven".