2758145 has 8 divisors (see below), whose sum is σ = 3564456. Its totient is φ = 2036736.

The previous prime is 2758141. The next prime is 2758157. The reversal of 2758145 is 5418572.

It can be written as a sum of positive squares in 4 ways, for example, as 71824 + 2686321 = 268^2 + 1639^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2758145 - 2² = 2758141 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2758141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21152 + ... + 21281.

It is an arithmetic number, because the mean of its divisors is an integer number (445557).

2^2758145 is an apocalyptic number.

It is an amenable number.

2758145 is a deficient number, since it is larger than the sum of its proper divisors (806311).

2758145 is a wasteful number, since it uses less digits than its factorization.

2758145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42451.

The product of its digits is 11200, while the sum is 32.

The square root of 2758145 is about 1660.7663893516. The cubic root of 2758145 is about 140.2401490492.

The spelling of 2758145 in words is "two million, seven hundred fifty-eight thousand, one hundred forty-five".