1145258 has 4 divisors (see below), whose sum is σ = 1717890. Its totient is φ = 572628.

The previous prime is 1145227. The next prime is 1145269. The reversal of 1145258 is 8525411.

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

It can be written as a sum of positive squares in only one way, i.e., 877969 + 267289 = 937^2 + 517^2 .

It is a Curzon number.

It is a plaindrome in base 16.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 286313 + ... + 286316.

2^1145258 is an apocalyptic number.

1145258 is a deficient number, since it is larger than the sum of its proper divisors (572632).

1145258 is an equidigital number, since it uses as much as digits as its factorization.

1145258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572631.

The product of its digits is 1600, while the sum is 26.

The square root of 1145258 is about 1070.1672766442. The cubic root of 1145258 is about 104.6247527599.

The spelling of 1145258 in words is "one million, one hundred forty-five thousand, two hundred fifty-eight".