2556860105 has 8 divisors (see below), whose sum is σ = 3078705672. Its totient is φ = 2038505728.

The previous prime is 2556860093. The next prime is 2556860149. The reversal of 2556860105 is 5010686552.

It can be written as a sum of positive squares in 4 ways, for example, as 1758628096 + 798232009 = 41936^2 + 28253^2 .

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 2556860105 - 2¹² = 2556856009 is a prime.

It is a super-2 number, since 2×2556860105² = 13075067193081222050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 871184 + ... + 874113.

It is an arithmetic number, because the mean of its divisors is an integer number (384838209).

Almost surely, 2^2556860105 is an apocalyptic number.

It is an amenable number.

2556860105 is a deficient number, since it is larger than the sum of its proper divisors (521845567).

2556860105 is a wasteful number, since it uses less digits than its factorization.

2556860105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745595.

The product of its (nonzero) digits is 72000, while the sum is 38.

The square root of 2556860105 is about 50565.4042305606. The cubic root of 2556860105 is about 1367.4212425970.

The spelling of 2556860105 in words is "two billion, five hundred fifty-six million, eight hundred sixty thousand, one hundred five".