1002255533 has 4 divisors (see below), whose sum is σ = 1005981660. Its totient is φ = 998529408.

The previous prime is 1002255523. The next prime is 1002255557. The reversal of 1002255533 is 3355522001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3355522001 = 13 ⋅258117077.

It can be written as a sum of positive squares in 2 ways, for example, as 68525284 + 933730249 = 8278^2 + 30557^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002255533 - 2⁴ = 1002255517 is a prime.

It is a super-2 number, since 2×1002255533² = 2009032306858228178, 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 (1002255523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1862660 + ... + 1863197.

It is an arithmetic number, because the mean of its divisors is an integer number (251495415).

Almost surely, 2^1002255533 is an apocalyptic number.

It is an amenable number.

1002255533 is a deficient number, since it is larger than the sum of its proper divisors (3726127).

1002255533 is an equidigital number, since it uses as much as digits as its factorization.

1002255533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3726126.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 1002255533 is about 31658.4196225901. The cubic root of 1002255533 is about 1000.7512797707.

Adding to 1002255533 its reverse (3355522001), we get a palindrome (4357777534).

The spelling of 1002255533 in words is "one billion, two million, two hundred fifty-five thousand, five hundred thirty-three".