98521837 has 2 divisors, whose sum is σ = 98521838. Its totient is φ = 98521836.

The previous prime is 98521831. The next prime is 98521873. The reversal of 98521837 is 73812589.

Together with next prime (98521873) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71419401 + 27102436 = 8451^2 + 5206^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98521837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 98521793 and 98521802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98521831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49260918 + 49260919.

It is an arithmetic number, because the mean of its divisors is an integer number (49260919).

Almost surely, 2^98521837 is an apocalyptic number.

It is an amenable number.

98521837 is a deficient number, since it is larger than the sum of its proper divisors (1).

98521837 is an equidigital number, since it uses as much as digits as its factorization.

98521837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 43.

The square root of 98521837 is about 9925.8166918395. The cubic root of 98521837 is about 461.8605130399.

It can be divided in two parts, 985 and 21837, that added together give a palindrome (22822).

The spelling of 98521837 in words is "ninety-eight million, five hundred twenty-one thousand, eight hundred thirty-seven".