84528551 has 4 divisors (see below), whose sum is σ = 85478400. Its totient is φ = 83578704.

The previous prime is 84528527. The next prime is 84528559. The reversal of 84528551 is 15582548.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84528551 - 2¹⁴ = 84512167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84528559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 474791 + ... + 474968.

It is an arithmetic number, because the mean of its divisors is an integer number (21369600).

Almost surely, 2^84528551 is an apocalyptic number.

84528551 is a deficient number, since it is larger than the sum of its proper divisors (949849).

84528551 is an equidigital number, since it uses as much as digits as its factorization.

84528551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949848.

The product of its digits is 64000, while the sum is 38.

The square root of 84528551 is about 9193.9409939373. The cubic root of 84528551 is about 438.8685651814.

The spelling of 84528551 in words is "eighty-four million, five hundred twenty-eight thousand, five hundred fifty-one".