1001545 has 8 divisors (see below), whose sum is σ = 1207296. Its totient is φ = 797616.

The previous prime is 1001531. The next prime is 1001549. The reversal of 1001545 is 5451001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001545 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1654 + ... + 2176.

It is an arithmetic number, because the mean of its divisors is an integer number (150912).

2^1001545 is an apocalyptic number.

It is an amenable number.

1001545 is a deficient number, since it is larger than the sum of its proper divisors (205751).

1001545 is an equidigital number, since it uses as much as digits as its factorization.

1001545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 1001545 is about 1000.7722018521. The cubic root of 1001545 is about 100.0514735002.

Adding to 1001545 its reverse (5451001), we get a palindrome (6452546).

It can be divided in two parts, 1001 and 545, that multiplied together give a palindrome (545545).

The spelling of 1001545 in words is "one million, one thousand, five hundred forty-five".