505540353 has 8 divisors (see below), whose sum is σ = 709530400. Its totient is φ = 319288608.

The previous prime is 505540337. The next prime is 505540363. The reversal of 505540353 is 353045505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 505540353 - 2⁴ = 505540337 is a prime.

It is a super-2 number, since 2×505540353² = 511142097022729218, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 505540353.

It is not an unprimeable number, because it can be changed into a prime (505540303) 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, 4434508 + ... + 4434621.

It is an arithmetic number, because the mean of its divisors is an integer number (88691300).

Almost surely, 2^505540353 is an apocalyptic number.

It is an amenable number.

505540353 is a deficient number, since it is larger than the sum of its proper divisors (203990047).

505540353 is a wasteful number, since it uses less digits than its factorization.

505540353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8869151.

The product of its (nonzero) digits is 22500, while the sum is 30.

The square root of 505540353 is about 22484.2245363277. The cubic root of 505540353 is about 796.6213515265.

Adding to 505540353 its reverse (353045505), we get a palindrome (858585858).

The spelling of 505540353 in words is "five hundred five million, five hundred forty thousand, three hundred fifty-three".