81276495 has 8 divisors (see below), whose sum is σ = 130042416. Its totient is φ = 43347456.

The previous prime is 81276463. The next prime is 81276499. The reversal of 81276495 is 59467218.

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

It is not a de Polignac number, because 81276495 - 2⁵ = 81276463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81276499) 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, 2709202 + ... + 2709231.

It is an arithmetic number, because the mean of its divisors is an integer number (16255302).

Almost surely, 2^81276495 is an apocalyptic number.

81276495 is a deficient number, since it is larger than the sum of its proper divisors (48765921).

81276495 is a wasteful number, since it uses less digits than its factorization.

81276495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5418441.

The product of its digits is 120960, while the sum is 42.

The square root of 81276495 is about 9015.3477470367. The cubic root of 81276495 is about 433.1666265388.

The spelling of 81276495 in words is "eighty-one million, two hundred seventy-six thousand, four hundred ninety-five".