2755642 has 4 divisors (see below), whose sum is σ = 4133466. Its totient is φ = 1377820.

The previous prime is 2755637. The next prime is 2755661. The reversal of 2755642 is 2465572.

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

It can be written as a sum of positive squares in only one way, i.e., 2660161 + 95481 = 1631^2 + 309^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688909 + ... + 688912.

2^2755642 is an apocalyptic number.

2755642 is a deficient number, since it is larger than the sum of its proper divisors (1377824).

2755642 is a wasteful number, since it uses less digits than its factorization.

2755642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377823.

The product of its digits is 16800, while the sum is 31.

The square root of 2755642 is about 1660.0126505542. The cubic root of 2755642 is about 140.1977138461.

The spelling of 2755642 in words is "two million, seven hundred fifty-five thousand, six hundred forty-two".