1145145 has 8 divisors (see below), whose sum is σ = 1832256. Its totient is φ = 610736.

The previous prime is 1145143. The next prime is 1145173. The reversal of 1145145 is 5415411.

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 1145145 - 2¹ = 1145143 is a prime.

It is a super-2 number, since 2×1145145² = 2622714142050, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1145141) 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 7 ways as a sum of consecutive naturals, for example, 38157 + ... + 38186.

It is an arithmetic number, because the mean of its divisors is an integer number (229032).

2^1145145 is an apocalyptic number.

1145145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1145145 is a deficient number, since it is larger than the sum of its proper divisors (687111).

1145145 is an equidigital number, since it uses as much as digits as its factorization.

1145145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76351.

The product of its digits is 400, while the sum is 21.

The square root of 1145145 is about 1070.1144798572. The cubic root of 1145145 is about 104.6213116180.

The spelling of 1145145 in words is "one million, one hundred forty-five thousand, one hundred forty-five".