2755381 has 4 divisors (see below), whose sum is σ = 2782764. Its totient is φ = 2728000.

The previous prime is 2755369. The next prime is 2755387. The reversal of 2755381 is 1835572.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2430481 + 324900 = 1559^2 + 570^2 .

It is a cyclic number.

It is not a de Polignac number, because 2755381 - 2¹⁷ = 2624309 is a prime.

It is a super-2 number, since 2×2755381² = 15184248910322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2755387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13540 + ... + 13741.

It is an arithmetic number, because the mean of its divisors is an integer number (695691).

2^2755381 is an apocalyptic number.

It is an amenable number.

2755381 is a deficient number, since it is larger than the sum of its proper divisors (27383).

2755381 is a wasteful number, since it uses less digits than its factorization.

2755381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27382.

The product of its digits is 8400, while the sum is 31.

The square root of 2755381 is about 1659.9340348339. The cubic root of 2755381 is about 140.1932874416.

It can be divided in two parts, 2755 and 381, that added together give a square (3136 = 56²).

The spelling of 2755381 in words is "two million, seven hundred fifty-five thousand, three hundred eighty-one".