81927355 has 8 divisors (see below), whose sum is σ = 98365392. Its totient is φ = 65506848.

The previous prime is 81927353. The next prime is 81927359. The reversal of 81927355 is 55372918.

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

It is a cyclic number.

It is not a de Polignac number, because 81927355 - 2¹ = 81927353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81927353) 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, 10509 + ... + 16561.

It is an arithmetic number, because the mean of its divisors is an integer number (12295674).

Almost surely, 2^81927355 is an apocalyptic number.

81927355 is a deficient number, since it is larger than the sum of its proper divisors (16438037).

81927355 is a wasteful number, since it uses less digits than its factorization.

81927355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8765.

The product of its digits is 75600, while the sum is 40.

The square root of 81927355 is about 9051.3731002539. The cubic root of 81927355 is about 434.3198160146.

The spelling of 81927355 in words is "eighty-one million, nine hundred twenty-seven thousand, three hundred fifty-five".