2751561 has 12 divisors (see below), whose sum is σ = 4183920. Its totient is φ = 1737720.

The previous prime is 2751557. The next prime is 2751571. The reversal of 2751561 is 1651572.

It is not a de Polignac number, because 2751561 - 2² = 2751557 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2751571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7875 + ... + 8216.

It is an arithmetic number, because the mean of its divisors is an integer number (348660).

2^2751561 is an apocalyptic number.

It is an amenable number.

2751561 is a deficient number, since it is larger than the sum of its proper divisors (1432359).

2751561 is a wasteful number, since it uses less digits than its factorization.

2751561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16116 (or 16113 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 2751561 is about 1658.7829876147. The cubic root of 2751561 is about 140.1284705088.

The spelling of 2751561 in words is "two million, seven hundred fifty-one thousand, five hundred sixty-one".