98618551 has 2 divisors, whose sum is σ = 98618552. Its totient is φ = 98618550.

The previous prime is 98618519. The next prime is 98618563. The reversal of 98618551 is 15581689.

It is a strong prime.

It is an emirp because it is prime and its reverse (15581689) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98618551 - 2⁵ = 98618519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 98618498 and 98618507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98618501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49309275 + 49309276.

It is an arithmetic number, because the mean of its divisors is an integer number (49309276).

Almost surely, 2^98618551 is an apocalyptic number.

98618551 is a deficient number, since it is larger than the sum of its proper divisors (1).

98618551 is an equidigital number, since it uses as much as digits as its factorization.

98618551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 43.

The square root of 98618551 is about 9930.6873377425. The cubic root of 98618551 is about 462.0115921331.

It can be divided in two parts, 986185 and 51, that multiplied together give a triangular number (50295435 = T₁₀₀₂₉).

The spelling of 98618551 in words is "ninety-eight million, six hundred eighteen thousand, five hundred fifty-one".