1002255523 has 2 divisors, whose sum is σ = 1002255524. Its totient is φ = 1002255522.

The previous prime is 1002255517. The next prime is 1002255557. The reversal of 1002255523 is 3255522001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1002255523 - 2⁹ = 1002255011 is a prime.

It is a super-2 number, since 2×1002255523² = 2009032266768007058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1002255323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501127761 + 501127762.

It is an arithmetic number, because the mean of its divisors is an integer number (501127762).

Almost surely, 2^1002255523 is an apocalyptic number.

1002255523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002255523 is an equidigital number, since it uses as much as digits as its factorization.

1002255523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 1002255523 is about 31658.4194646543. The cubic root of 1002255523 is about 1000.7512764424.

Adding to 1002255523 its reverse (3255522001), we get a palindrome (4257777524).

The spelling of 1002255523 in words is "one billion, two million, two hundred fifty-five thousand, five hundred twenty-three".