1065553 has 4 divisors (see below), whose sum is σ = 1071268. Its totient is φ = 1059840.

The previous prime is 1065529. The next prime is 1065557. The reversal of 1065553 is 3555601.

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

It can be written as a sum of positive squares in 2 ways, for example, as 278784 + 786769 = 528^2 + 887^2 .

It is a cyclic number.

It is not a de Polignac number, because 1065553 - 2⁹ = 1065041 is a prime.

It is a super-2 number, since 2×1065553² = 2270806391618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1065557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2568 + ... + 2953.

It is an arithmetic number, because the mean of its divisors is an integer number (267817).

2^1065553 is an apocalyptic number.

It is an amenable number.

1065553 is a deficient number, since it is larger than the sum of its proper divisors (5715).

1065553 is an equidigital number, since it uses as much as digits as its factorization.

1065553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5714.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 1065553 is about 1032.2562666315. The cubic root of 1065553 is about 102.1390197171.

The spelling of 1065553 in words is "one million, sixty-five thousand, five hundred fifty-three".