2250531561 has 8 divisors (see below), whose sum is σ = 3004613920. Its totient is φ = 1498401792.

The previous prime is 2250531557. The next prime is 2250531571. The reversal of 2250531561 is 1651350522.

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 2250531561 - 2² = 2250531557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2250531571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485455 + ... + 490068.

It is an arithmetic number, because the mean of its divisors is an integer number (375576740).

Almost surely, 2^2250531561 is an apocalyptic number.

It is an amenable number.

2250531561 is a deficient number, since it is larger than the sum of its proper divisors (754082359).

2250531561 is an equidigital number, since it uses as much as digits as its factorization.

2250531561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976295.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 2250531561 is about 47439.7677165477. The cubic root of 2250531561 is about 1310.4738803804.

The spelling of 2250531561 in words is "two billion, two hundred fifty million, five hundred thirty-one thousand, five hundred sixty-one".