2745855 has 48 divisors (see below), whose sum is σ = 5690880. Its totient is φ = 1197504.

The previous prime is 2745839. The next prime is 2745859. The reversal of 2745855 is 5585472.

It is a happy number.

2745855 is a `hidden beast` number, since 2 + 74 + 585 + 5 = 666.

It is not a de Polignac number, because 2745855 - 2⁴ = 2745839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2745859) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7056 + ... + 7434.

It is an arithmetic number, because the mean of its divisors is an integer number (118560).

2^2745855 is an apocalyptic number.

2745855 is an abundant number, since it is smaller than the sum of its proper divisors (2945025).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2745855 is a wasteful number, since it uses less digits than its factorization.

2745855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 417 counting only the distinct ones).

The product of its digits is 56000, while the sum is 36.

The square root of 2745855 is about 1657.0621593652. The cubic root of 2745855 is about 140.0315405128.

It can be divided in two parts, 2745 and 855, that added together give a square (3600 = 60²).

The spelling of 2745855 in words is "two million, seven hundred forty-five thousand, eight hundred fifty-five".