1005320505 has 24 divisors (see below), whose sum is σ = 1871128512. Its totient is φ = 459574752.

The previous prime is 1005320489. The next prime is 1005320579. The reversal of 1005320505 is 5050235001.

It is not a de Polignac number, because 1005320505 - 2⁴ = 1005320489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 683157 + ... + 684626.

It is an arithmetic number, because the mean of its divisors is an integer number (77963688).

Almost surely, 2^1005320505 is an apocalyptic number.

1005320505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1005320505 is a deficient number, since it is larger than the sum of its proper divisors (865808007).

1005320505 is a wasteful number, since it uses less digits than its factorization.

1005320505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367805 (or 1367798 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 1005320505 is about 31706.7895725821. The cubic root of 1005320505 is about 1001.7703656227.

Adding to 1005320505 its reverse (5050235001), we get a palindrome (6055555506).

The spelling of 1005320505 in words is "one billion, five million, three hundred twenty thousand, five hundred five".