2531450045 has 4 divisors (see below), whose sum is σ = 3037740060. Its totient is φ = 2025160032.

The previous prime is 2531450021. The next prime is 2531450057. The reversal of 2531450045 is 5400541352.

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

It can be written as a sum of positive squares in 2 ways, for example, as 594481924 + 1936968121 = 24382^2 + 44011^2 .

It is a cyclic number.

It is not a de Polignac number, because 2531450045 - 2²⁶ = 2464341181 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253145000 + ... + 253145009.

It is an arithmetic number, because the mean of its divisors is an integer number (759435015).

Almost surely, 2^2531450045 is an apocalyptic number.

It is an amenable number.

2531450045 is a deficient number, since it is larger than the sum of its proper divisors (506290015).

2531450045 is an equidigital number, since it uses as much as digits as its factorization.

2531450045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506290014.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 2531450045 is about 50313.5175176612. The cubic root of 2531450045 is about 1362.8763454946.

Adding to 2531450045 its reverse (5400541352), we get a palindrome (7931991397).

The spelling of 2531450045 in words is "two billion, five hundred thirty-one million, four hundred fifty thousand, forty-five".