1145255 has 8 divisors (see below), whose sum is σ = 1387152. Its totient is φ = 907648.

The previous prime is 1145227. The next prime is 1145269. The reversal of 1145255 is 5525411.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1145255 - 2⁶ = 1145191 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1145255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 449 + ... + 1578.

It is an arithmetic number, because the mean of its divisors is an integer number (173394).

2^1145255 is an apocalyptic number.

1145255 is a deficient number, since it is larger than the sum of its proper divisors (241897).

1145255 is a wasteful number, since it uses less digits than its factorization.

1145255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145.

The product of its digits is 1000, while the sum is 23.

The square root of 1145255 is about 1070.1658749932. The cubic root of 1145255 is about 104.6246614051.

The spelling of 1145255 in words is "one million, one hundred forty-five thousand, two hundred fifty-five".