81754017 has 8 divisors (see below), whose sum is σ = 114742560. Its totient is φ = 51634080.

The previous prime is 81753989. The next prime is 81754027. The reversal of 81754017 is 71045718.

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

It is not a de Polignac number, because 81754017 - 2⁶ = 81753953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81754027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 717084 + ... + 717197.

It is an arithmetic number, because the mean of its divisors is an integer number (14342820).

Almost surely, 2^81754017 is an apocalyptic number.

It is an amenable number.

81754017 is a deficient number, since it is larger than the sum of its proper divisors (32988543).

81754017 is a wasteful number, since it uses less digits than its factorization.

81754017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1434303.

The product of its (nonzero) digits is 7840, while the sum is 33.

The square root of 81754017 is about 9041.7927978914. The cubic root of 81754017 is about 434.0132953376.

The spelling of 81754017 in words is "eighty-one million, seven hundred fifty-four thousand, seventeen".