81048227 has 8 divisors (see below), whose sum is σ = 87737664. Its totient is φ = 74423808.

The previous prime is 81048223. The next prime is 81048263. The reversal of 81048227 is 72284018.

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 81048227 - 2² = 81048223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 81048193 and 81048202.

It is not an unprimeable number, because it can be changed into a prime (81048223) 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 7 ways as a sum of consecutive naturals, for example, 13643 + ... + 18660.

It is an arithmetic number, because the mean of its divisors is an integer number (10967208).

Almost surely, 2^81048227 is an apocalyptic number.

81048227 is a deficient number, since it is larger than the sum of its proper divisors (6689437).

81048227 is a wasteful number, since it uses less digits than its factorization.

81048227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32509.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 81048227 is about 9002.6788790893. The cubic root of 81048227 is about 432.7607248827.

The spelling of 81048227 in words is "eighty-one million, forty-eight thousand, two hundred twenty-seven".