81480514 has 8 divisors (see below), whose sum is σ = 122281488. Its totient is φ = 40720020.

The previous prime is 81480491. The next prime is 81480527. The reversal of 81480514 is 41508418.

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

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, 4452 + ... + 13519.

It is an arithmetic number, because the mean of its divisors is an integer number (15285186).

Almost surely, 2^81480514 is an apocalyptic number.

81480514 is a deficient number, since it is larger than the sum of its proper divisors (40800974).

81480514 is a wasteful number, since it uses less digits than its factorization.

81480514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20240.

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 81480514 is about 9026.6557483932. The cubic root of 81480514 is about 433.5287664159.

The spelling of 81480514 in words is "eighty-one million, four hundred eighty thousand, five hundred fourteen".