81030514 has 16 divisors (see below), whose sum is σ = 124830720. Its totient is φ = 39425440.

The previous prime is 81030503. The next prime is 81030557. The reversal of 81030514 is 41503018.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38247 + ... + 40309.

It is an arithmetic number, because the mean of its divisors is an integer number (7801920).

Almost surely, 2^81030514 is an apocalyptic number.

81030514 is a deficient number, since it is larger than the sum of its proper divisors (43800206).

81030514 is a wasteful number, since it uses less digits than its factorization.

81030514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2585.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 81030514 is about 9001.6950625979. The cubic root of 81030514 is about 432.7291961271.

The spelling of 81030514 in words is "eighty-one million, thirty thousand, five hundred fourteen".