84197151 has 20 divisors (see below), whose sum is σ = 132398200. Its totient is φ = 53176176.

The previous prime is 84197137. The next prime is 84197153. The reversal of 84197151 is 15179148.

It is not a de Polignac number, because 84197151 - 2¹³ = 84188959 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 (84197153) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 25816 + ... + 28893.

It is an arithmetic number, because the mean of its divisors is an integer number (6619910).

Almost surely, 2^84197151 is an apocalyptic number.

84197151 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

84197151 is a deficient number, since it is larger than the sum of its proper divisors (48201049).

84197151 is a wasteful number, since it uses less digits than its factorization.

84197151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54740 (or 54731 counting only the distinct ones).

The product of its digits is 10080, while the sum is 36.

The square root of 84197151 is about 9175.9005552589. The cubic root of 84197151 is about 438.2942758776.

It can be divided in two parts, 84197 and 151, that added together give a palindrome (84348).

The spelling of 84197151 in words is "eighty-four million, one hundred ninety-seven thousand, one hundred fifty-one".