5531234561 has 2 divisors, whose sum is σ = 5531234562. Its totient is φ = 5531234560.

The previous prime is 5531234549. The next prime is 5531234591. The reversal of 5531234561 is 1654321355.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5280202225 + 251032336 = 72665^2 + 15844^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5531234561 is a prime.

It is not a weakly prime, because it can be changed into another prime (5531234591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2765617280 + 2765617281.

It is an arithmetic number, because the mean of its divisors is an integer number (2765617281).

Almost surely, 2^5531234561 is an apocalyptic number.

It is an amenable number.

5531234561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5531234561 is an equidigital number, since it uses as much as digits as its factorization.

5531234561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54000, while the sum is 35.

The square root of 5531234561 is about 74372.2701078836. The cubic root of 5531234561 is about 1768.5093433334.

The spelling of 5531234561 in words is "five billion, five hundred thirty-one million, two hundred thirty-four thousand, five hundred sixty-one".