561054331 has 2 divisors, whose sum is σ = 561054332. Its totient is φ = 561054330.

The previous prime is 561054301. The next prime is 561054371. The reversal of 561054331 is 133450165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561054331 - 2¹³ = 561046139 is a prime.

It is a super-2 number, since 2×561054331² = 629563924667715122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 561054331.

It is not a weakly prime, because it can be changed into another prime (561054301) 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 as a sum of consecutive naturals, namely, 280527165 + 280527166.

It is an arithmetic number, because the mean of its divisors is an integer number (280527166).

Almost surely, 2^561054331 is an apocalyptic number.

561054331 is a deficient number, since it is larger than the sum of its proper divisors (1).

561054331 is an equidigital number, since it uses as much as digits as its factorization.

561054331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 561054331 is about 23686.5854651953. The cubic root of 561054331 is about 824.7740212414.

The spelling of 561054331 in words is "five hundred sixty-one million, fifty-four thousand, three hundred thirty-one".