89028557 has 2 divisors, whose sum is σ = 89028558. Its totient is φ = 89028556.

The previous prime is 89028553. The next prime is 89028587. The reversal of 89028557 is 75582098.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58767556 + 30261001 = 7666^2 + 5501^2 .

It is a cyclic number.

It is not a de Polignac number, because 89028557 - 2² = 89028553 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89028551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44514278 + 44514279.

It is an arithmetic number, because the mean of its divisors is an integer number (44514279).

Almost surely, 2^89028557 is an apocalyptic number.

It is an amenable number.

89028557 is a deficient number, since it is larger than the sum of its proper divisors (1).

89028557 is an equidigital number, since it uses as much as digits as its factorization.

89028557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 201600, while the sum is 44.

The square root of 89028557 is about 9435.4945286402. The cubic root of 89028557 is about 446.5222571582.

The spelling of 89028557 in words is "eighty-nine million, twenty-eight thousand, five hundred fifty-seven".