505500007 has 4 divisors (see below), whose sum is σ = 505818136. Its totient is φ = 505181880.

The previous prime is 505499971. The next prime is 505500013. The reversal of 505500007 is 700005505.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 505500007 - 2¹⁹ = 504975719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505500067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156669 + ... + 159862.

It is an arithmetic number, because the mean of its divisors is an integer number (126454534).

Almost surely, 2^505500007 is an apocalyptic number.

505500007 is a deficient number, since it is larger than the sum of its proper divisors (318129).

505500007 is a wasteful number, since it uses less digits than its factorization.

505500007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318128.

The product of its (nonzero) digits is 875, while the sum is 22.

The square root of 505500007 is about 22483.3273115880. The cubic root of 505500007 is about 796.6001587969.

The spelling of 505500007 in words is "five hundred five million, five hundred thousand, seven".