2745261 has 6 divisors (see below), whose sum is σ = 3965390. Its totient is φ = 1830168.

The previous prime is 2745251. The next prime is 2745263. The reversal of 2745261 is 1625472.

It can be written as a sum of positive squares in only one way, i.e., 1946025 + 799236 = 1395^2 + 894^2 .

It is not a de Polignac number, because 2745261 - 2⁵ = 2745229 is a prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 7⁵ + 4⁴ + 5 + 2¹⁹ + 6⁸ + 1 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2745263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 152506 + ... + 152523.

2^2745261 is an apocalyptic number.

It is an amenable number.

2745261 is a deficient number, since it is larger than the sum of its proper divisors (1220129).

2745261 is a wasteful number, since it uses less digits than its factorization.

2745261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305035 (or 305032 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 2745261 is about 1656.8829168049. The cubic root of 2745261 is about 140.0214422940.

The spelling of 2745261 in words is "two million, seven hundred forty-five thousand, two hundred sixty-one".