98551985 has 12 divisors (see below), whose sum is σ = 137570868. Its totient is φ = 67578336.

The previous prime is 98551969. The next prime is 98552059. The reversal of 98551985 is 58915589.

It can be written as a sum of positive squares in 2 ways, for example, as 14077504 + 84474481 = 3752^2 + 9191^2 .

It is not a de Polignac number, because 98551985 - 2⁴ = 98551969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200882 + ... + 201371.

It is an arithmetic number, because the mean of its divisors is an integer number (11464239).

Almost surely, 2^98551985 is an apocalyptic number.

It is an amenable number.

98551985 is a deficient number, since it is larger than the sum of its proper divisors (39018883).

98551985 is a wasteful number, since it uses less digits than its factorization.

98551985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402272 (or 402265 counting only the distinct ones).

The product of its digits is 648000, while the sum is 50.

The square root of 98551985 is about 9927.3352416447. The cubic root of 98551985 is about 461.9076185045.

The spelling of 98551985 in words is "ninety-eight million, five hundred fifty-one thousand, nine hundred eighty-five".