84520529 has 4 divisors (see below), whose sum is σ = 87435060. Its totient is φ = 81606000.

The previous prime is 84520511. The next prime is 84520547. The reversal of 84520529 is 92502548.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (84520511) and next prime (84520547).

It can be written as a sum of positive squares in 2 ways, for example, as 59290000 + 25230529 = 7700^2 + 5023^2 .

It is not a de Polignac number, because 84520529 - 2¹² = 84516433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84520729) 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, 1457222 + ... + 1457279.

It is an arithmetic number, because the mean of its divisors is an integer number (21858765).

Almost surely, 2^84520529 is an apocalyptic number.

It is an amenable number.

84520529 is a deficient number, since it is larger than the sum of its proper divisors (2914531).

84520529 is a wasteful number, since it uses less digits than its factorization.

84520529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2914530.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 84520529 is about 9193.5047180061. The cubic root of 84520529 is about 438.8546814503.

The spelling of 84520529 in words is "eighty-four million, five hundred twenty thousand, five hundred twenty-nine".