81514 has 8 divisors (see below), whose sum is σ = 124740. Its totient is φ = 39936.

The previous prime is 81509. The next prime is 81517. The reversal of 81514 is 41518.

It can be written as a sum of positive squares in 2 ways, for example, as 81225 + 289 = 285^2 + 17^2 .

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 = 81491 and 81500.

It is not an unprimeable number, because it can be changed into a prime (81517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279 + ... + 490.

2⁸¹⁵¹⁴ is an apocalyptic number.

81514 is a deficient number, since it is larger than the sum of its proper divisors (43226).

81514 is a wasteful number, since it uses less digits than its factorization.

81514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824.

The product of its digits is 160, while the sum is 19.

The square root of 81514 is about 285.5065673500. The cubic root of 81514 is about 43.3588147305.

It can be divided in two parts, 81 and 514, that added together give a palindrome (595).

The spelling of 81514 in words is "eighty-one thousand, five hundred fourteen".