505120355 has 16 divisors (see below), whose sum is σ = 640257024. Its totient is φ = 381961440.

The previous prime is 505120333. The next prime is 505120367. The reversal of 505120355 is 553021505.

It is not a de Polignac number, because 505120355 - 2²⁰ = 504071779 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31229 + ... + 44558.

It is an arithmetic number, because the mean of its divisors is an integer number (40016064).

Almost surely, 2^505120355 is an apocalyptic number.

505120355 is a deficient number, since it is larger than the sum of its proper divisors (135136669).

505120355 is a wasteful number, since it uses less digits than its factorization.

505120355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75866.

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 505120355 is about 22474.8827583149. The cubic root of 505120355 is about 796.4006819860.

The spelling of 505120355 in words is "five hundred five million, one hundred twenty thousand, three hundred fifty-five".