505050001 has 4 divisors (see below), whose sum is σ = 531631600. Its totient is φ = 478468404.

The previous prime is 505049983. The next prime is 505050043. The reversal of 505050001 is 100050505.

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 not a de Polignac number, because 505050001 - 2⁷ = 505049873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505053001) 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, 13290771 + ... + 13290808.

It is an arithmetic number, because the mean of its divisors is an integer number (132907900).

Almost surely, 2^505050001 is an apocalyptic number.

It is an amenable number.

505050001 is a deficient number, since it is larger than the sum of its proper divisors (26581599).

505050001 is a wasteful number, since it uses less digits than its factorization.

505050001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26581598.

The product of its (nonzero) digits is 125, while the sum is 16.

The square root of 505050001 is about 22473.3175343562. The cubic root of 505050001 is about 796.3637056004.

The spelling of 505050001 in words is "five hundred five million, fifty thousand, one".