505413445 has 16 divisors (see below), whose sum is σ = 611679600. Its totient is φ = 400889344.

The previous prime is 505413439. The next prime is 505413449. The reversal of 505413445 is 544314505.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 13549761 + 491863684 = 3681^2 + 22178^2 .

It is a cyclic number.

It is not a de Polignac number, because 505413445 - 2⁷ = 505413317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505413449) 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, 481281 + ... + 482329.

It is an arithmetic number, because the mean of its divisors is an integer number (38229975).

Almost surely, 2^505413445 is an apocalyptic number.

It is an amenable number.

505413445 is a deficient number, since it is larger than the sum of its proper divisors (106266155).

505413445 is a wasteful number, since it uses less digits than its factorization.

505413445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 505413445 is about 22481.4022027097. The cubic root of 505413445 is about 796.5546861702.

The spelling of 505413445 in words is "five hundred five million, four hundred thirteen thousand, four hundred forty-five".