285453121 has 4 divisors (see below), whose sum is σ = 285572692. Its totient is φ = 285333552.

The previous prime is 285453101. The next prime is 285453167. The reversal of 285453121 is 121354582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121354582 = 2 ⋅60677291.

It can be written as a sum of positive squares in 2 ways, for example, as 278222400 + 7230721 = 16680^2 + 2689^2 .

It is a cyclic number.

It is not a de Polignac number, because 285453121 - 2⁵ = 285453089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285453101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56130 + ... + 61003.

It is an arithmetic number, because the mean of its divisors is an integer number (71393173).

Almost surely, 2^285453121 is an apocalyptic number.

It is an amenable number.

285453121 is a deficient number, since it is larger than the sum of its proper divisors (119571).

285453121 is a wasteful number, since it uses less digits than its factorization.

285453121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119570.

The product of its digits is 9600, while the sum is 31.

The square root of 285453121 is about 16895.3579719401. The cubic root of 285453121 is about 658.4330142853.

The spelling of 285453121 in words is "two hundred eighty-five million, four hundred fifty-three thousand, one hundred twenty-one".