505891353 has 16 divisors (see below), whose sum is σ = 738590400. Its totient is φ = 305455680.

The previous prime is 505891349. The next prime is 505891357. The reversal of 505891353 is 353198505.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (505891349) and next prime (505891357).

It is not a de Polignac number, because 505891353 - 2² = 505891349 is a prime.

It is a super-2 number, since 2×505891353² = 511852122080341218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (505891357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19618 + ... + 37371.

It is an arithmetic number, because the mean of its divisors is an integer number (46161900).

Almost surely, 2^505891353 is an apocalyptic number.

It is an amenable number.

505891353 is a deficient number, since it is larger than the sum of its proper divisors (232699047).

505891353 is a wasteful number, since it uses less digits than its factorization.

505891353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57272.

The product of its (nonzero) digits is 81000, while the sum is 39.

The square root of 505891353 is about 22492.0286546145. The cubic root of 505891353 is about 796.8056753595.

The spelling of 505891353 in words is "five hundred five million, eight hundred ninety-one thousand, three hundred fifty-three".