81455126 has 8 divisors (see below), whose sum is σ = 129369960. Its totient is φ = 38331808.

The previous prime is 81455111. The next prime is 81455161. The reversal of 81455126 is 62155418.

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

It is a junction number, because it is equal to n+sod(n) for n = 81455092 and 81455101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1197836 + ... + 1197903.

It is an arithmetic number, because the mean of its divisors is an integer number (16171245).

Almost surely, 2^81455126 is an apocalyptic number.

81455126 is a deficient number, since it is larger than the sum of its proper divisors (47914834).

81455126 is a wasteful number, since it uses less digits than its factorization.

81455126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2395758.

The product of its digits is 9600, while the sum is 32.

The square root of 81455126 is about 9025.2493594360. The cubic root of 81455126 is about 433.4837349062.

The spelling of 81455126 in words is "eighty-one million, four hundred fifty-five thousand, one hundred twenty-six".