1145955 has 16 divisors (see below), whose sum is σ = 1846944. Its totient is φ = 606720.

The previous prime is 1145899. The next prime is 1145971. The reversal of 1145955 is 5595411.

It is not a de Polignac number, because 1145955 - 2¹⁰ = 1144931 is a prime.

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 in 15 ways as a sum of consecutive naturals, for example, 3457 + ... + 3773.

It is an arithmetic number, because the mean of its divisors is an integer number (115434).

2^1145955 is an apocalyptic number.

1145955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1145955 is a deficient number, since it is larger than the sum of its proper divisors (700989).

1145955 is a wasteful number, since it uses less digits than its factorization.

1145955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566.

The product of its digits is 4500, while the sum is 30.

The square root of 1145955 is about 1070.4928771365. The cubic root of 1145955 is about 104.6459732081.

It can be divided in two parts, 11 and 45955, that multiplied together give a palindrome (505505).

The spelling of 1145955 in words is "one million, one hundred forty-five thousand, nine hundred fifty-five".