84271261 has 8 divisors (see below), whose sum is σ = 89430264. Its totient is φ = 79134720.

The previous prime is 84271259. The next prime is 84271267. The reversal of 84271261 is 16217248.

It can be written as a sum of positive squares in 4 ways, for example, as 37088100 + 47183161 = 6090^2 + 6869^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84271261 - 2¹ = 84271259 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 (84271267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2461 + ... + 13213.

It is an arithmetic number, because the mean of its divisors is an integer number (11178783).

Almost surely, 2^84271261 is an apocalyptic number.

It is an amenable number.

84271261 is a deficient number, since it is larger than the sum of its proper divisors (5159003).

84271261 is a wasteful number, since it uses less digits than its factorization.

84271261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11231.

The product of its digits is 5376, while the sum is 31.

The square root of 84271261 is about 9179.9379627533. The cubic root of 84271261 is about 438.4228331303.

The spelling of 84271261 in words is "eighty-four million, two hundred seventy-one thousand, two hundred sixty-one".