505121205 has 8 divisors (see below), whose sum is σ = 808193952. Its totient is φ = 269397968.

The previous prime is 505121203. The next prime is 505121207. The reversal of 505121205 is 502121505.

It is an interprime number because it is at equal distance from previous prime (505121203) and next prime (505121207).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 505121205 - 2¹ = 505121203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505121203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16837359 + ... + 16837388.

It is an arithmetic number, because the mean of its divisors is an integer number (101024244).

Almost surely, 2^505121205 is an apocalyptic number.

It is an amenable number.

505121205 is a deficient number, since it is larger than the sum of its proper divisors (303072747).

505121205 is a wasteful number, since it uses less digits than its factorization.

505121205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33674755.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 505121205 is about 22474.9016683055. The cubic root of 505121205 is about 796.4011287047.

The spelling of 505121205 in words is "five hundred five million, one hundred twenty-one thousand, two hundred five".