84225557 has 8 divisors (see below), whose sum is σ = 90909336. Its totient is φ = 77571072.

The previous prime is 84225553. The next prime is 84225593. The reversal of 84225557 is 75552248.

It can be written as a sum of positive squares in 4 ways, for example, as 40056241 + 44169316 = 6329^2 + 6646^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84225557 - 2² = 84225553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84225557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84225553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1148 + ... + 13029.

It is an arithmetic number, because the mean of its divisors is an integer number (11363667).

Almost surely, 2^84225557 is an apocalyptic number.

It is an amenable number.

84225557 is a deficient number, since it is larger than the sum of its proper divisors (6683779).

84225557 is a wasteful number, since it uses less digits than its factorization.

84225557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14647.

The product of its digits is 112000, while the sum is 38.

The square root of 84225557 is about 9177.4482837006. The cubic root of 84225557 is about 438.3435601553.

The spelling of 84225557 in words is "eighty-four million, two hundred twenty-five thousand, five hundred fifty-seven".