84525791 has 4 divisors (see below), whose sum is σ = 96600912. Its totient is φ = 72450672.

The previous prime is 84525781. The next prime is 84525799. The reversal of 84525791 is 19752548.

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

It is not a de Polignac number, because 84525791 - 2¹⁰ = 84524767 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 (84525799) 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, 6037550 + ... + 6037563.

It is an arithmetic number, because the mean of its divisors is an integer number (24150228).

Almost surely, 2^84525791 is an apocalyptic number.

84525791 is a deficient number, since it is larger than the sum of its proper divisors (12075121).

84525791 is a wasteful number, since it uses less digits than its factorization.

84525791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12075120.

The product of its digits is 100800, while the sum is 41.

The square root of 84525791 is about 9193.7908938587. The cubic root of 84525791 is about 438.8637885293.

The spelling of 84525791 in words is "eighty-four million, five hundred twenty-five thousand, seven hundred ninety-one".