352120505 has 16 divisors (see below), whose sum is σ = 472203648. Its totient is φ = 249840000.

The previous prime is 352120481. The next prime is 352120511. The reversal of 352120505 is 505021253.

It is a de Polignac number, because none of the positive numbers 2^k-352120505 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75821 + ... + 80330.

It is an arithmetic number, because the mean of its divisors is an integer number (29512728).

Almost surely, 2^352120505 is an apocalyptic number.

It is an amenable number.

352120505 is a deficient number, since it is larger than the sum of its proper divisors (120083143).

352120505 is a wasteful number, since it uses less digits than its factorization.

352120505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156208.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 352120505 is about 18764.8742335247. The cubic root of 352120505 is about 706.1502307183.

Adding to 352120505 its reverse (505021253), we get a palindrome (857141758).

The spelling of 352120505 in words is "three hundred fifty-two million, one hundred twenty thousand, five hundred five".