1004005355 has 4 divisors (see below), whose sum is σ = 1204806432. Its totient is φ = 803204280.

The previous prime is 1004005333. The next prime is 1004005357. The reversal of 1004005355 is 5535004001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5535004001 = 541 ⋅10231061.

It is not a de Polignac number, because 1004005355 - 2¹² = 1004001259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1004005355.

It is not an unprimeable number, because it can be changed into a prime (1004005357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100400531 + ... + 100400540.

It is an arithmetic number, because the mean of its divisors is an integer number (301201608).

Almost surely, 2^1004005355 is an apocalyptic number.

1004005355 is a deficient number, since it is larger than the sum of its proper divisors (200801077).

1004005355 is an equidigital number, since it uses as much as digits as its factorization.

1004005355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200801076.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 1004005355 is about 31686.0435365478. The cubic root of 1004005355 is about 1001.3333397483. Note that the first 5 decimals are identical.

Adding to 1004005355 its reverse (5535004001), we get a palindrome (6539009356).

The spelling of 1004005355 in words is "one billion, four million, five thousand, three hundred fifty-five".