84098551 has 2 divisors, whose sum is σ = 84098552. Its totient is φ = 84098550.

The previous prime is 84098549. The next prime is 84098563. The reversal of 84098551 is 15589048.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84098551 - 2¹ = 84098549 is a prime.

Together with 84098549, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84098501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42049275 + 42049276.

It is an arithmetic number, because the mean of its divisors is an integer number (42049276).

Almost surely, 2^84098551 is an apocalyptic number.

84098551 is a deficient number, since it is larger than the sum of its proper divisors (1).

84098551 is an equidigital number, since it uses as much as digits as its factorization.

84098551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 84098551 is about 9170.5262117285. The cubic root of 84098551 is about 438.1231192706.

The spelling of 84098551 in words is "eighty-four million, ninety-eight thousand, five hundred fifty-one".