2531530545 has 8 divisors (see below), whose sum is σ = 4050448896. Its totient is φ = 1350149616.

The previous prime is 2531530517. The next prime is 2531530549. The reversal of 2531530545 is 5450351352.

It is a happy number.

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

It is not a de Polignac number, because 2531530545 - 2⁹ = 2531530033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2531530549) 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, 84384337 + ... + 84384366.

It is an arithmetic number, because the mean of its divisors is an integer number (506306112).

Almost surely, 2^2531530545 is an apocalyptic number.

It is an amenable number.

2531530545 is a deficient number, since it is larger than the sum of its proper divisors (1518918351).

2531530545 is a wasteful number, since it uses less digits than its factorization.

2531530545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168768711.

The product of its (nonzero) digits is 45000, while the sum is 33.

The square root of 2531530545 is about 50314.3174951226. The cubic root of 2531530545 is about 1362.8907918107.

Adding to 2531530545 its reverse (5450351352), we get a palindrome (7981881897).

The spelling of 2531530545 in words is "two billion, five hundred thirty-one million, five hundred thirty thousand, five hundred forty-five".