1002255545 has 8 divisors (see below), whose sum is σ = 1213741320. Its totient is φ = 794448000.

The previous prime is 1002255523. The next prime is 1002255557. The reversal of 1002255545 is 5455522001.

It can be written as a sum of positive squares in 4 ways, for example, as 151191616 + 851063929 = 12296^2 + 29173^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-1002255545 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 918956 + ... + 920045.

It is an arithmetic number, because the mean of its divisors is an integer number (151717665).

Almost surely, 2^1002255545 is an apocalyptic number.

It is an amenable number.

1002255545 is a deficient number, since it is larger than the sum of its proper divisors (211485775).

1002255545 is a wasteful number, since it uses less digits than its factorization.

1002255545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1839115.

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 1002255545 is about 31658.4198121132. The cubic root of 1002255545 is about 1000.7512837647.

Adding to 1002255545 its reverse (5455522001), we get a palindrome (6457777546).

The spelling of 1002255545 in words is "one billion, two million, two hundred fifty-five thousand, five hundred forty-five".