98495581 has 2 divisors, whose sum is σ = 98495582. Its totient is φ = 98495580.

The previous prime is 98495567. The next prime is 98495609. The reversal of 98495581 is 18559489.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98307225 + 188356 = 9915^2 + 434^2 .

It is a cyclic number.

It is not a de Polignac number, because 98495581 - 2⁵ = 98495549 is a prime.

It is a super-2 number, since 2×98495581² = 19402758953055122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98495681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49247790 + 49247791.

It is an arithmetic number, because the mean of its divisors is an integer number (49247791).

Almost surely, 2^98495581 is an apocalyptic number.

It is an amenable number.

98495581 is a deficient number, since it is larger than the sum of its proper divisors (1).

98495581 is an equidigital number, since it uses as much as digits as its factorization.

98495581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518400, while the sum is 49.

The square root of 98495581 is about 9924.4939921388. The cubic root of 98495581 is about 461.8194808944.

The spelling of 98495581 in words is "ninety-eight million, four hundred ninety-five thousand, five hundred eighty-one".