98581555 has 16 divisors (see below), whose sum is σ = 126507744. Its totient is φ = 73484800.

The previous prime is 98581531. The next prime is 98581559. The reversal of 98581555 is 55518589.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-98581555 is a prime.

It is not an unprimeable number, because it can be changed into a prime (98581559) 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 in 15 ways as a sum of consecutive naturals, for example, 2844 + ... + 14326.

It is an arithmetic number, because the mean of its divisors is an integer number (7906734).

Almost surely, 2^98581555 is an apocalyptic number.

98581555 is a deficient number, since it is larger than the sum of its proper divisors (27926189).

98581555 is a wasteful number, since it uses less digits than its factorization.

98581555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11606.

The product of its digits is 360000, while the sum is 46.

The square root of 98581555 is about 9928.8244520688. The cubic root of 98581555 is about 461.9538115278.

The spelling of 98581555 in words is "ninety-eight million, five hundred eighty-one thousand, five hundred fifty-five".