505396845 has 48 divisors (see below), whose sum is σ = 905141952. Its totient is φ = 260709120.

The previous prime is 505396841. The next prime is 505396847. The reversal of 505396845 is 548693505.

505396845 is a `hidden beast` number, since 50 + 539 + 68 + 4 + 5 = 666.

It is not a de Polignac number, because 505396845 - 2² = 505396841 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 505396845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505396841) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 205825 + ... + 208265.

It is an arithmetic number, because the mean of its divisors is an integer number (18857124).

Almost surely, 2^505396845 is an apocalyptic number.

It is an amenable number.

505396845 is a deficient number, since it is larger than the sum of its proper divisors (399745107).

505396845 is a wasteful number, since it uses less digits than its factorization.

505396845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2602 (or 2599 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The square root of 505396845 is about 22481.0330056250. The cubic root of 505396845 is about 796.5459652885.

The spelling of 505396845 in words is "five hundred five million, three hundred ninety-six thousand, eight hundred forty-five".