1153945 has 16 divisors (see below), whose sum is σ = 1531152. Its totient is φ = 829440.

The previous prime is 1153921. The next prime is 1153967. The reversal of 1153945 is 5493511.

1153945 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 8 ways, for example, as 559504 + 594441 = 748^2 + 771^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1153945 is a prime.

It is a Duffinian number.

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, 2449 + ... + 2881.

It is an arithmetic number, because the mean of its divisors is an integer number (95697).

2^1153945 is an apocalyptic number.

It is an amenable number.

1153945 is a deficient number, since it is larger than the sum of its proper divisors (377207).

1153945 is a wasteful number, since it uses less digits than its factorization.

1153945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492.

The product of its digits is 2700, while the sum is 28.

The square root of 1153945 is about 1074.2183204545. The cubic root of 1153945 is about 104.8886196106. Note that the first 3 decimals are identical.

It can be divided in two parts, 11 and 53945, that multiplied together give a palindrome (593395).

The spelling of 1153945 in words is "one million, one hundred fifty-three thousand, nine hundred forty-five".