1047531 has 4 divisors (see below), whose sum is σ = 1396712. Its totient is φ = 698352.

The previous prime is 1047511. The next prime is 1047533. The reversal of 1047531 is 1357401.

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

It is not a de Polignac number, because 1047531 - 2⁵ = 1047499 is a prime.

It is a super-2 number, since 2×1047531² = 2194642391922, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1047498 and 1047507.

It is not an unprimeable number, because it can be changed into a prime (1047533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174586 + ... + 174591.

It is an arithmetic number, because the mean of its divisors is an integer number (349178).

2^1047531 is an apocalyptic number.

1047531 is a deficient number, since it is larger than the sum of its proper divisors (349181).

1047531 is an equidigital number, since it uses as much as digits as its factorization.

1047531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349180.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 1047531 is about 1023.4896189019. The cubic root of 1047531 is about 101.5599070423.

The spelling of 1047531 in words is "one million, forty-seven thousand, five hundred thirty-one".