1145187 has 24 divisors (see below), whose sum is σ = 1798160. Its totient is φ = 699840.

The previous prime is 1145173. The next prime is 1145189. The reversal of 1145187 is 7815411.

It is not a de Polignac number, because 1145187 - 2⁷ = 1145059 is a prime.

It is a super-2 number, since 2×1145187² = 2622906529938, which contains 22 as substring.

1145187 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1145187.

It is not an unprimeable number, because it can be changed into a prime (1145189) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 6237 + ... + 6417.

2^1145187 is an apocalyptic number.

1145187 is a deficient number, since it is larger than the sum of its proper divisors (652973).

1145187 is a wasteful number, since it uses less digits than its factorization.

1145187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243 (or 240 counting only the distinct ones).

The product of its digits is 1120, while the sum is 27.

The square root of 1145187 is about 1070.1341037459. The cubic root of 1145187 is about 104.6225906529.

The spelling of 1145187 in words is "one million, one hundred forty-five thousand, one hundred eighty-seven".