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98655551 = 435722643

98655551 has 4 divisors (see below), whose sum is σ = 98682552. Its totient is φ = 98628552.

The previous prime is 98655541. The next prime is 98655647. The reversal of 98655551 is 15555689.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15555689 = 20997411.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-98655551 is a prime.

It is a super-2 number, since 2×986555512 = 19465835486227202, which contains 22 as substring.

It is a Duffinian number.

98655551 is a Rhonda number in base 10.

Its product of digits (270000) is a multiple of the sum of its prime divisors (27000).

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98655541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6965 + ... + 15678.

It is an arithmetic number, because the mean of its divisors is an integer number (24670638).

Almost surely, 298655551 is an apocalyptic number.

98655551 is a deficient number, since it is larger than the sum of its proper divisors (27001).

98655551 is a wasteful number, since it uses less digits than its factorization.

98655551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27000.

The product of its digits is 270000, while the sum is 44.

The square root of 98655551 is about 9932.5500753835. The cubic root of 98655551 is about 462.0693645344.

The spelling of 98655551 in words is "ninety-eight million, six hundred fifty-five thousand, five hundred fifty-one".

Divisors: 1 4357 22643 98655551