89059561 has 2 divisors, whose sum is σ = 89059562. Its totient is φ = 89059560.

The previous prime is 89059507. The next prime is 89059577. The reversal of 89059561 is 16595098.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60543961 + 28515600 = 7781^2 + 5340^2 .

It is a cyclic number.

It is not a de Polignac number, because 89059561 - 2¹⁵ = 89026793 is a prime.

It is not a weakly prime, because it can be changed into another prime (89059661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44529780 + 44529781.

It is an arithmetic number, because the mean of its divisors is an integer number (44529781).

Almost surely, 2^89059561 is an apocalyptic number.

It is an amenable number.

89059561 is a deficient number, since it is larger than the sum of its proper divisors (1).

89059561 is an equidigital number, since it uses as much as digits as its factorization.

89059561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 43.

The square root of 89059561 is about 9437.1373307799. The cubic root of 89059561 is about 446.5740846085.

The spelling of 89059561 in words is "eighty-nine million, fifty-nine thousand, five hundred sixty-one".