2751540 has 72 divisors (see below), whose sum is σ = 8490720. Its totient is φ = 665280.

The previous prime is 2751517. The next prime is 2751557. The reversal of 2751540 is 451572.

It is a self number, because there is not a number n which added to its sum of digits gives 2751540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7071 + ... + 7449.

2^2751540 is an apocalyptic number.

2751540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2751540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4245360).

2751540 is an abundant number, since it is smaller than the sum of its proper divisors (5739180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2751540 is a wasteful number, since it uses less digits than its factorization.

2751540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413 (or 400 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 2751540 is about 1658.7766576607. The cubic root of 2751540 is about 140.1281140196.

Subtracting from 2751540 its reverse (451572), we obtain a cube (2299968 = 132³).

The spelling of 2751540 in words is "two million, seven hundred fifty-one thousand, five hundred forty".