1045531 has 4 divisors (see below), whose sum is σ = 1065312. Its totient is φ = 1025752.

The previous prime is 1045529. The next prime is 1045543. The reversal of 1045531 is 1355401.

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

It is a cyclic number.

It is not a de Polignac number, because 1045531 - 2¹ = 1045529 is a prime.

It is a super-2 number, since 2×1045531² = 2186270143922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1045499 and 1045508.

It is not an unprimeable number, because it can be changed into a prime (1045571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9811 + ... + 9916.

It is an arithmetic number, because the mean of its divisors is an integer number (266328).

2^1045531 is an apocalyptic number.

1045531 is a deficient number, since it is larger than the sum of its proper divisors (19781).

1045531 is an equidigital number, since it uses as much as digits as its factorization.

1045531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19780.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 1045531 is about 1022.5121026179. The cubic root of 1045531 is about 101.4952314001.

The spelling of 1045531 in words is "one million, forty-five thousand, five hundred thirty-one".