81468501 has 8 divisors (see below), whose sum is σ = 108682464. Its totient is φ = 54283440.

The previous prime is 81468481. The next prime is 81468503. The reversal of 81468501 is 10586418.

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

It is not a de Polignac number, because 81468501 - 2⁵ = 81468469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81468503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550 + ... + 12776.

It is an arithmetic number, because the mean of its divisors is an integer number (13585308).

Almost surely, 2^81468501 is an apocalyptic number.

It is an amenable number.

81468501 is a deficient number, since it is larger than the sum of its proper divisors (27213963).

81468501 is a wasteful number, since it uses less digits than its factorization.

81468501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14451.

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 81468501 is about 9025.9903057781. The cubic root of 81468501 is about 433.5074597387.

The spelling of 81468501 in words is "eighty-one million, four hundred sixty-eight thousand, five hundred one".