84523551 has 32 divisors (see below), whose sum is σ = 135782400. Its totient is φ = 45723744.

The previous prime is 84523519. The next prime is 84523553. The reversal of 84523551 is 15532548.

It is not a de Polignac number, because 84523551 - 2⁵ = 84523519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84523553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48900 + ... + 50598.

It is an arithmetic number, because the mean of its divisors is an integer number (4243200).

Almost surely, 2^84523551 is an apocalyptic number.

84523551 is a deficient number, since it is larger than the sum of its proper divisors (51258849).

84523551 is a wasteful number, since it uses less digits than its factorization.

84523551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835.

The product of its digits is 24000, while the sum is 33.

The square root of 84523551 is about 9193.6690717036. The cubic root of 84523551 is about 438.8599117498.

The spelling of 84523551 in words is "eighty-four million, five hundred twenty-three thousand, five hundred fifty-one".