81060259 has 6 divisors (see below), whose sum is σ = 94294644. Its totient is φ = 69480180.

The previous prime is 81060247. The next prime is 81060263. The reversal of 81060259 is 95206018.

It is not a de Polignac number, because 81060259 - 2¹³ = 81052067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 81060259.

It is not an unprimeable number, because it can be changed into a prime (81060299) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 827097 + ... + 827194.

It is an arithmetic number, because the mean of its divisors is an integer number (15715774).

Almost surely, 2^81060259 is an apocalyptic number.

81060259 is a deficient number, since it is larger than the sum of its proper divisors (13234385).

81060259 is a wasteful number, since it uses less digits than its factorization.

81060259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654305 (or 1654298 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 81060259 is about 9003.3470998290. The cubic root of 81060259 is about 432.7821389616.

The spelling of 81060259 in words is "eighty-one million, sixty thousand, two hundred fifty-nine".