505532501 has 4 divisors (see below), whose sum is σ = 517862604. Its totient is φ = 493202400.

The previous prime is 505532491. The next prime is 505532509. The reversal of 505532501 is 105235505.

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

It can be written as a sum of positive squares in 2 ways, for example, as 280562500 + 224970001 = 16750^2 + 14999^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505532501 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 (505532509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6164990 + ... + 6165071.

It is an arithmetic number, because the mean of its divisors is an integer number (129465651).

Almost surely, 2^505532501 is an apocalyptic number.

It is an amenable number.

505532501 is a deficient number, since it is larger than the sum of its proper divisors (12330103).

505532501 is a wasteful number, since it uses less digits than its factorization.

505532501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12330102.

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 505532501 is about 22484.0499243353. The cubic root of 505532501 is about 796.6172271586.

The spelling of 505532501 in words is "five hundred five million, five hundred thirty-two thousand, five hundred one".