505001501 has 16 divisors (see below), whose sum is σ = 546186240. Its totient is φ = 465548160.

The previous prime is 505001491. The next prime is 505001509. The reversal of 505001501 is 105100505.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505001501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 505001501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505001509) 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, 190481 + ... + 193113.

It is an arithmetic number, because the mean of its divisors is an integer number (34136640).

Almost surely, 2^505001501 is an apocalyptic number.

It is an amenable number.

505001501 is a deficient number, since it is larger than the sum of its proper divisors (41184739).

505001501 is a wasteful number, since it uses less digits than its factorization.

505001501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2956.

The product of its (nonzero) digits is 125, while the sum is 17.

The square root of 505001501 is about 22472.2384510311. The cubic root of 505001501 is about 796.3382131567.

The spelling of 505001501 in words is "five hundred five million, one thousand, five hundred one".