1086531 has 4 divisors (see below), whose sum is σ = 1448712. Its totient is φ = 724352.

The previous prime is 1086529. The next prime is 1086557. The reversal of 1086531 is 1356801.

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 1086531 - 2¹ = 1086529 is a prime.

It is a super-2 number, since 2×1086531² = 2361099227922, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1086511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181086 + ... + 181091.

It is an arithmetic number, because the mean of its divisors is an integer number (362178).

2^1086531 is an apocalyptic number.

1086531 is a deficient number, since it is larger than the sum of its proper divisors (362181).

1086531 is an equidigital number, since it uses as much as digits as its factorization.

1086531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362180.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1086531 is about 1042.3679772518. The cubic root of 1086531 is about 102.8049534068.

The spelling of 1086531 in words is "one million, eighty-six thousand, five hundred thirty-one".