285120611 has 4 divisors (see below), whose sum is σ = 285155400. Its totient is φ = 285085824.

The previous prime is 285120599. The next prime is 285120613. The reversal of 285120611 is 116021582.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 116021582 = 2 ⋅58010791.

It is a cyclic number.

It is not a de Polignac number, because 285120611 - 2¹⁰ = 285119587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285120613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2435 + ... + 24003.

It is an arithmetic number, because the mean of its divisors is an integer number (71288850).

Almost surely, 2^285120611 is an apocalyptic number.

285120611 is a deficient number, since it is larger than the sum of its proper divisors (34789).

285120611 is a wasteful number, since it uses less digits than its factorization.

285120611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34788.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 285120611 is about 16885.5148278043. The cubic root of 285120611 is about 658.1772564398.

The spelling of 285120611 in words is "two hundred eighty-five million, one hundred twenty thousand, six hundred eleven".