2531745 has 24 divisors (see below), whose sum is σ = 4432896. Its totient is φ = 1336608.

The previous prime is 2531741. The next prime is 2531747. The reversal of 2531745 is 5471352.

It is a happy number.

It is not a de Polignac number, because 2531745 - 2² = 2531741 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2531741) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5494 + ... + 5936.

It is an arithmetic number, because the mean of its divisors is an integer number (184704).

2^2531745 is an apocalyptic number.

It is an amenable number.

2531745 is a deficient number, since it is larger than the sum of its proper divisors (1901151).

2531745 is a wasteful number, since it uses less digits than its factorization.

2531745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581 (or 578 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 2531745 is about 1591.1458135570. The cubic root of 2531745 is about 136.2929275841.

The spelling of 2531745 in words is "two million, five hundred thirty-one thousand, seven hundred forty-five".