81270853 has 8 divisors (see below), whose sum is σ = 81883008. Its totient is φ = 80661504.

The previous prime is 81270823. The next prime is 81270859. The reversal of 81270853 is 35807218.

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 81270853 - 2⁵ = 81270821 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 (81270859) 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, 118650 + ... + 119332.

It is an arithmetic number, because the mean of its divisors is an integer number (10235376).

Almost surely, 2^81270853 is an apocalyptic number.

It is an amenable number.

81270853 is a deficient number, since it is larger than the sum of its proper divisors (612155).

81270853 is a wasteful number, since it uses less digits than its factorization.

81270853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 81270853 is about 9015.0348307702. The cubic root of 81270853 is about 433.1566032118.

The spelling of 81270853 in words is "eighty-one million, two hundred seventy thousand, eight hundred fifty-three".