285505001 has 8 divisors (see below), whose sum is σ = 300787680. Its totient is φ = 270247968.

The previous prime is 285504991. The next prime is 285505013. The reversal of 285505001 is 100505582.

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 285505001 - 2¹⁸ = 285242857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285505091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19085 + ... + 30581.

It is an arithmetic number, because the mean of its divisors is an integer number (37598460).

Almost surely, 2^285505001 is an apocalyptic number.

It is an amenable number.

285505001 is a deficient number, since it is larger than the sum of its proper divisors (15282679).

285505001 is a wasteful number, since it uses less digits than its factorization.

285505001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12823.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 285505001 is about 16896.8932351483. The cubic root of 285505001 is about 658.4729010864.

The spelling of 285505001 in words is "two hundred eighty-five million, five hundred five thousand, one".