1000545 has 32 divisors (see below), whose sum is σ = 1972992. Its totient is φ = 421632.

The previous prime is 1000541. The next prime is 1000547. The reversal of 1000545 is 5450001.

It is not a de Polignac number, because 1000545 - 2² = 1000541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1000541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 999 + ... + 1731.

It is an arithmetic number, because the mean of its divisors is an integer number (61656).

2^1000545 is an apocalyptic number.

1000545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1000545 is a deficient number, since it is larger than the sum of its proper divisors (972447).

1000545 is a wasteful number, since it uses less digits than its factorization.

1000545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761.

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 1000545 is about 1000.2724628820. The cubic root of 1000545 is about 100.0181633674.

Adding to 1000545 its reverse (5450001), we get a palindrome (6450546).

The spelling of 1000545 in words is "one million, five hundred forty-five", and thus it is an aban number.