2755123581 has 16 divisors (see below), whose sum is σ = 4445241984. Its totient is φ = 1481746944.

The previous prime is 2755123559. The next prime is 2755123681. The reversal of 2755123581 is 1853215572.

It is not a de Polignac number, because 2755123581 - 2¹⁴ = 2755107197 is a prime.

It is a super-2 number, since 2×2755123581² = 15181411893164527122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2755123541) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3858360 + ... + 3859073.

It is an arithmetic number, because the mean of its divisors is an integer number (277827624).

Almost surely, 2^2755123581 is an apocalyptic number.

2755123581 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2755123581 is a deficient number, since it is larger than the sum of its proper divisors (1690118403).

2755123581 is a wasteful number, since it uses less digits than its factorization.

2755123581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7717460.

The product of its digits is 84000, while the sum is 39.

The square root of 2755123581 is about 52489.2711037218. The cubic root of 2755123581 is about 1401.8892149486.

The spelling of 2755123581 in words is "two billion, seven hundred fifty-five million, one hundred twenty-three thousand, five hundred eighty-one".