385503505 has 8 divisors (see below), whose sum is σ = 463131072. Its totient is φ = 308051568.

The previous prime is 385503491. The next prime is 385503527. The reversal of 385503505 is 505305583.

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 385503505 - 2¹⁷ = 385372433 is a prime.

It is a super-2 number, since 2×385503505² = 297225904734570050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39027 + ... + 47896.

It is an arithmetic number, because the mean of its divisors is an integer number (57891384).

Almost surely, 2^385503505 is an apocalyptic number.

It is an amenable number.

385503505 is a deficient number, since it is larger than the sum of its proper divisors (77627567).

385503505 is an equidigital number, since it uses as much as digits as its factorization.

385503505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87815.

The product of its (nonzero) digits is 45000, while the sum is 34.

The square root of 385503505 is about 19634.2431735985. The cubic root of 385503505 is about 727.7956301759.

The spelling of 385503505 in words is "three hundred eighty-five million, five hundred three thousand, five hundred five".