286253945 has 4 divisors (see below), whose sum is σ = 343504740. Its totient is φ = 229003152.

The previous prime is 286253927. The next prime is 286253963. The reversal of 286253945 is 549352682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 549352682 = 2 ⋅274676341.

It is an interprime number because it is at equal distance from previous prime (286253927) and next prime (286253963).

It can be written as a sum of positive squares in 2 ways, for example, as 142157929 + 144096016 = 11923^2 + 12004^2 .

It is a cyclic number.

It is not a de Polignac number, because 286253945 - 2¹² = 286249849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 286253896 and 286253905.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28625390 + ... + 28625399.

It is an arithmetic number, because the mean of its divisors is an integer number (85876185).

Almost surely, 2^286253945 is an apocalyptic number.

It is an amenable number.

286253945 is a deficient number, since it is larger than the sum of its proper divisors (57250795).

286253945 is an equidigital number, since it uses as much as digits as its factorization.

286253945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57250794.

The product of its digits is 518400, while the sum is 44.

The square root of 286253945 is about 16919.0409007130. The cubic root of 286253945 is about 659.0481726594.

The spelling of 286253945 in words is "two hundred eighty-six million, two hundred fifty-three thousand, nine hundred forty-five".