505155304 has 8 divisors (see below), whose sum is σ = 947166210. Its totient is φ = 252577648.

The previous prime is 505155293. The next prime is 505155307. The reversal of 505155304 is 403551505.

It can be written as a sum of positive squares in only one way, i.e., 353816100 + 151339204 = 18810^2 + 12302^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (505155307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31572199 + ... + 31572214.

Almost surely, 2^505155304 is an apocalyptic number.

It is an amenable number.

505155304 is a deficient number, since it is larger than the sum of its proper divisors (442010906).

505155304 is a wasteful number, since it uses less digits than its factorization.

505155304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63144419 (or 63144415 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 505155304 is about 22475.6602572650. The cubic root of 505155304 is about 796.4190490710.

The spelling of 505155304 in words is "five hundred five million, one hundred fifty-five thousand, three hundred four".