89161057 has 2 divisors, whose sum is σ = 89161058. Its totient is φ = 89161056.

The previous prime is 89161031. The next prime is 89161069. The reversal of 89161057 is 75016198.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88811776 + 349281 = 9424^2 + 591^2 .

It is a cyclic number.

It is not a de Polignac number, because 89161057 - 2¹¹ = 89159009 is a prime.

It is not a weakly prime, because it can be changed into another prime (89161027) 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, 44580528 + 44580529.

It is an arithmetic number, because the mean of its divisors is an integer number (44580529).

Almost surely, 2^89161057 is an apocalyptic number.

It is an amenable number.

89161057 is a deficient number, since it is larger than the sum of its proper divisors (1).

89161057 is an equidigital number, since it uses as much as digits as its factorization.

89161057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 89161057 is about 9442.5132777243. The cubic root of 89161057 is about 446.7436650383.

The spelling of 89161057 in words is "eighty-nine million, one hundred sixty-one thousand, fifty-seven".