505100501 has 4 divisors (see below), whose sum is σ = 506433600. Its totient is φ = 503767404.

The previous prime is 505100467. The next prime is 505100521. The reversal of 505100501 is 105001505.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505100501 is a prime.

It is a super-2 number, since 2×505100501² = 510253032220902002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 505100501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505100521) 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, 665981 + ... + 666738.

It is an arithmetic number, because the mean of its divisors is an integer number (126608400).

Almost surely, 2^505100501 is an apocalyptic number.

It is an amenable number.

505100501 is a deficient number, since it is larger than the sum of its proper divisors (1333099).

505100501 is a wasteful number, since it uses less digits than its factorization.

505100501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333098.

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

The square root of 505100501 is about 22474.4410609029. The cubic root of 505100501 is about 796.3902475445.

The spelling of 505100501 in words is "five hundred five million, one hundred thousand, five hundred one".