81059414 has 16 divisors (see below), whose sum is σ = 124222128. Its totient is φ = 39660192.

The previous prime is 81059413. The next prime is 81059441. The reversal of 81059414 is 41495018.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81059413) 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, 19112 + ... + 22964.

It is an arithmetic number, because the mean of its divisors is an integer number (7763883).

Almost surely, 2^81059414 is an apocalyptic number.

81059414 is a deficient number, since it is larger than the sum of its proper divisors (43162714).

81059414 is a wasteful number, since it uses less digits than its factorization.

81059414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4079.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 81059414 is about 9003.3001727144. The cubic root of 81059414 is about 432.7806351332.

The spelling of 81059414 in words is "eighty-one million, fifty-nine thousand, four hundred fourteen".