1016531 has 8 divisors (see below), whose sum is σ = 1070880. Its totient is φ = 963072.

The previous prime is 1016527. The next prime is 1016567. The reversal of 1016531 is 1356101.

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

It is a cyclic number.

It is not a de Polignac number, because 1016531 - 2² = 1016527 is a prime.

It is a super-2 number, since 2×1016531² = 2066670547922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1016581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4325 + ... + 4553.

It is an arithmetic number, because the mean of its divisors is an integer number (133860).

2^1016531 is an apocalyptic number.

1016531 is a deficient number, since it is larger than the sum of its proper divisors (54349).

1016531 is a wasteful number, since it uses less digits than its factorization.

1016531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 1016531 is about 1008.2316202143. The cubic root of 1016531 is about 100.5480245381.

The spelling of 1016531 in words is "one million, sixteen thousand, five hundred thirty-one".