505543445 has 12 divisors (see below), whose sum is σ = 666816780. Its totient is φ = 367667520.

The previous prime is 505543429. The next prime is 505543459. The reversal of 505543445 is 544345505.

It can be written as a sum of positive squares in 2 ways, for example, as 203861284 + 301682161 = 14278^2 + 17369^2 .

It is not a de Polignac number, because 505543445 - 2⁴ = 505543429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 417200 + ... + 418409.

It is an arithmetic number, because the mean of its divisors is an integer number (55568065).

Almost surely, 2^505543445 is an apocalyptic number.

505543445 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

505543445 is a deficient number, since it is larger than the sum of its proper divisors (161273335).

505543445 is a wasteful number, since it uses less digits than its factorization.

505543445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835636 (or 835625 counting only the distinct ones).

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

The square root of 505543445 is about 22484.2932955430. The cubic root of 505543445 is about 796.6229756291.

The spelling of 505543445 in words is "five hundred five million, five hundred forty-three thousand, four hundred forty-five".