205220501 has 8 divisors (see below), whose sum is σ = 223471200. Its totient is φ = 187714800.

The previous prime is 205220453. The next prime is 205220551. The reversal of 205220501 is 105022502.

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 205220501 - 2⁶ = 205220437 is a prime.

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 205220501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205220551) 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, 185675 + ... + 186776.

It is an arithmetic number, because the mean of its divisors is an integer number (27933900).

Almost surely, 2^205220501 is an apocalyptic number.

It is an amenable number.

205220501 is a deficient number, since it is larger than the sum of its proper divisors (18250699).

205220501 is a wasteful number, since it uses less digits than its factorization.

205220501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372499.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 205220501 is about 14325.5192227018. The cubic root of 205220501 is about 589.8481855877.

The spelling of 205220501 in words is "two hundred five million, two hundred twenty thousand, five hundred one".