2745831 has 8 divisors (see below), whose sum is σ = 3993984. Its totient is φ = 1664120.

The previous prime is 2745829. The next prime is 2745833. The reversal of 2745831 is 1385472.

It is an interprime number because it is at equal distance from previous prime (2745829) and next prime (2745833).

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

It is a cyclic number.

It is not a de Polignac number, because 2745831 - 2¹ = 2745829 is a prime.

It is a super-2 number, since 2×2745831² = 15079175761122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2745833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41571 + ... + 41636.

It is an arithmetic number, because the mean of its divisors is an integer number (499248).

2^2745831 is an apocalyptic number.

2745831 is a deficient number, since it is larger than the sum of its proper divisors (1248153).

2745831 is a wasteful number, since it uses less digits than its factorization.

2745831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83221.

The product of its digits is 6720, while the sum is 30.

The square root of 2745831 is about 1657.0549176174. The cubic root of 2745831 is about 140.0311325322.

It can be divided in two parts, 274 and 5831, that added together give a triangular number (6105 = T₁₁₀).

The spelling of 2745831 in words is "two million, seven hundred forty-five thousand, eight hundred thirty-one".