1151545 has 4 divisors (see below), whose sum is σ = 1381860. Its totient is φ = 921232.

The previous prime is 1151537. The next prime is 1151569. The reversal of 1151545 is 5451511.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 710649 + 440896 = 843^2 + 664^2 .

It is a cyclic number.

It is not a de Polignac number, because 1151545 - 2³ = 1151537 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

1151545 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115150 + ... + 115159.

It is an arithmetic number, because the mean of its divisors is an integer number (345465).

2^1151545 is an apocalyptic number.

It is an amenable number.

1151545 is a deficient number, since it is larger than the sum of its proper divisors (230315).

1151545 is an equidigital number, since it uses as much as digits as its factorization.

1151545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230314.

The product of its digits is 500, while the sum is 22.

The square root of 1151545 is about 1073.1006476561. The cubic root of 1151545 is about 104.8158525929.

The spelling of 1151545 in words is "one million, one hundred fifty-one thousand, five hundred forty-five".