2286145 has 4 divisors (see below), whose sum is σ = 2743380. Its totient is φ = 1828912.

The previous prime is 2286139. The next prime is 2286149. The reversal of 2286145 is 5416822.

It is a Cunningham number, because it is equal to 1512²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 824464 + 1461681 = 908^2 + 1209^2 .

It is a cyclic number.

It is not a de Polignac number, because 2286145 - 2⁷ = 2286017 is a prime.

It is a super-2 number, since 2×2286145² = 10452917922050, which contains 22 as substring.

It is an Ulam number.

2286145 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2286149) 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, 228610 + ... + 228619.

It is an arithmetic number, because the mean of its divisors is an integer number (685845).

2^2286145 is an apocalyptic number.

It is an amenable number.

2286145 is a deficient number, since it is larger than the sum of its proper divisors (457235).

2286145 is an equidigital number, since it uses as much as digits as its factorization.

2286145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457234.

The product of its digits is 3840, while the sum is 28.

The square root of 2286145 is about 1512.0003306878. Note that the first 3 decimals coincide. The cubic root of 2286145 is about 131.7350247686.

The spelling of 2286145 in words is "two million, two hundred eighty-six thousand, one hundred forty-five".