81441514 has 32 divisors (see below), whose sum is σ = 156433536. Its totient is φ = 30870720.

The previous prime is 81441487. The next prime is 81441517. The reversal of 81441514 is 41514418.

It is a super-2 number, since 2×81441514² = 13265440405224392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (81441517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1449 + ... + 12844.

It is an arithmetic number, because the mean of its divisors is an integer number (4888548).

Almost surely, 2^81441514 is an apocalyptic number.

81441514 is a deficient number, since it is larger than the sum of its proper divisors (74992022).

81441514 is a wasteful number, since it uses less digits than its factorization.

81441514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14350.

The product of its digits is 2560, while the sum is 28.

The square root of 81441514 is about 9024.4952213406. The cubic root of 81441514 is about 433.4595870120.

The spelling of 81441514 in words is "eighty-one million, four hundred forty-one thousand, five hundred fourteen".