4000002555 has 8 divisors (see below), whose sum is σ = 6400004112. Its totient is φ = 2133334688.

The previous prime is 4000002553. The next prime is 4000002619. The reversal of 4000002555 is 5552000004.

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

It is a cyclic number.

It is not a de Polignac number, because 4000002555 - 2¹ = 4000002553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4000002551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133333404 + ... + 133333433.

It is an arithmetic number, because the mean of its divisors is an integer number (800000514).

Almost surely, 2^4000002555 is an apocalyptic number.

4000002555 is a deficient number, since it is larger than the sum of its proper divisors (2400001557).

4000002555 is a wasteful number, since it uses less digits than its factorization.

4000002555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266666845.

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 4000002555 is about 63245.5734024129. The cubic root of 4000002555 is about 1587.4013899523.

Adding to 4000002555 its reverse (5552000004), we get a palindrome (9552002559).

The spelling of 4000002555 in words is "four billion, two thousand, five hundred fifty-five".