2748531 has 4 divisors (see below), whose sum is σ = 3664712. Its totient is φ = 1832352.

The previous prime is 2748503. The next prime is 2748547. The reversal of 2748531 is 1358472.

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

It is not a de Polignac number, because 2748531 - 2⁶ = 2748467 is a prime.

It is a super-2 number, since 2×2748531² = 15108845315922, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

2748531 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2748131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458086 + ... + 458091.

It is an arithmetic number, because the mean of its divisors is an integer number (916178).

2^2748531 is an apocalyptic number.

2748531 is a deficient number, since it is larger than the sum of its proper divisors (916181).

2748531 is an equidigital number, since it uses as much as digits as its factorization.

2748531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916180.

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

The square root of 2748531 is about 1657.8694158467. The cubic root of 2748531 is about 140.0770154484.

The spelling of 2748531 in words is "two million, seven hundred forty-eight thousand, five hundred thirty-one".