2749513 has 4 divisors (see below), whose sum is σ = 2961028. Its totient is φ = 2538000.

The previous prime is 2749511. The next prime is 2749531. The reversal of 2749513 is 3159472.

2749513 = 1172² + 1173².

2749513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1375929 + 1373584 = 1173^2 + 1172^2 .

It is a cyclic number.

It is not a de Polignac number, because 2749513 - 2¹ = 2749511 is a prime.

It is a d-powerful number, because it can be written as 2²¹ + 7⁶ + 4³ + 9² + 5⁵ + 1 + 3¹² .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2749511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105738 + ... + 105763.

It is an arithmetic number, because the mean of its divisors is an integer number (740257).

2^2749513 is an apocalyptic number.

2749513 is the 1173-rd centered square number.

It is an amenable number.

2749513 is a deficient number, since it is larger than the sum of its proper divisors (211515).

2749513 is a wasteful number, since it uses less digits than its factorization.

2749513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211514.

The product of its digits is 7560, while the sum is 31.

The square root of 2749513 is about 1658.1655526515. The cubic root of 2749513 is about 140.0936957830.

It can be divided in two parts, 27495 and 13, that multiplied together give a triangular number (357435 = T₈₄₅).

The spelling of 2749513 in words is "two million, seven hundred forty-nine thousand, five hundred thirteen".