84528401 has 4 divisors (see below), whose sum is σ = 84709872. Its totient is φ = 84346932.

The previous prime is 84528361. The next prime is 84528469. The reversal of 84528401 is 10482548.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84528401 - 2⁶ = 84528337 is a prime.

It is a super-3 number, since 3×84528401³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84528491) 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 3 ways as a sum of consecutive naturals, for example, 90035 + ... + 90968.

It is an arithmetic number, because the mean of its divisors is an integer number (21177468).

Almost surely, 2^84528401 is an apocalyptic number.

It is an amenable number.

84528401 is a deficient number, since it is larger than the sum of its proper divisors (181471).

84528401 is a wasteful number, since it uses less digits than its factorization.

84528401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181470.

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 84528401 is about 9193.9328363873. The cubic root of 84528401 is about 438.8683055834.

The spelling of 84528401 in words is "eighty-four million, five hundred twenty-eight thousand, four hundred one".