505544345 has 16 divisors (see below), whose sum is σ = 617820672. Its totient is φ = 397042560.

The previous prime is 505544341. The next prime is 505544363. The reversal of 505544345 is 543445505.

It is not a de Polignac number, because 505544345 - 2² = 505544341 is a prime.

It is a super-2 number, since 2×505544345² = 511150169522958050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505544341) 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 15 ways as a sum of consecutive naturals, for example, 78290 + ... + 84500.

It is an arithmetic number, because the mean of its divisors is an integer number (38613792).

Almost surely, 2^505544345 is an apocalyptic number.

It is an amenable number.

505544345 is a deficient number, since it is larger than the sum of its proper divisors (112276327).

505544345 is a wasteful number, since it uses less digits than its factorization.

505544345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6512.

The product of its (nonzero) digits is 120000, while the sum is 35.

The square root of 505544345 is about 22484.3133095054. The cubic root of 505544345 is about 796.6234483615.

The spelling of 505544345 in words is "five hundred five million, five hundred forty-four thousand, three hundred forty-five".