2780500255 has 8 divisors (see below), whose sum is σ = 3593261952. Its totient is φ = 2053292448.

The previous prime is 2780500211. The next prime is 2780500273. The reversal of 2780500255 is 5520050872.

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 2780500255 - 2¹³ = 2780492063 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 2780500255.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21388399 + ... + 21388528.

It is an arithmetic number, because the mean of its divisors is an integer number (449157744).

Almost surely, 2^2780500255 is an apocalyptic number.

2780500255 is a deficient number, since it is larger than the sum of its proper divisors (812761697).

2780500255 is a wasteful number, since it uses less digits than its factorization.

2780500255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42776945.

The product of its (nonzero) digits is 28000, while the sum is 34.

The square root of 2780500255 is about 52730.4490308967. The cubic root of 2780500255 is about 1406.1802041277.

The spelling of 2780500255 in words is "two billion, seven hundred eighty million, five hundred thousand, two hundred fifty-five".