1016553 has 4 divisors (see below), whose sum is σ = 1355408. Its totient is φ = 677700.

The previous prime is 1016527. The next prime is 1016567. The reversal of 1016553 is 3556101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3556101 = 3 ⋅1185367.

It is not a de Polignac number, because 1016553 - 2⁶ = 1016489 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1016573) 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 3 ways as a sum of consecutive naturals, for example, 169423 + ... + 169428.

It is an arithmetic number, because the mean of its divisors is an integer number (338852).

2^1016553 is an apocalyptic number.

It is an amenable number.

1016553 is a deficient number, since it is larger than the sum of its proper divisors (338855).

1016553 is an equidigital number, since it uses as much as digits as its factorization.

1016553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338854.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 1016553 is about 1008.2425303467. The cubic root of 1016553 is about 100.5487498941.

The spelling of 1016553 in words is "one million, sixteen thousand, five hundred fifty-three".