81095048 has 16 divisors (see below), whose sum is σ = 155762460. Its totient is φ = 39558400.

The previous prime is 81095029. The next prime is 81095051. The reversal of 81095048 is 84059018.

It can be written as a sum of positive squares in 2 ways, for example, as 80964004 + 131044 = 8998^2 + 362^2 .

It is a junction number, because it is equal to n+sod(n) for n = 81094999 and 81095017.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123293 + ... + 123948.

Almost surely, 2^81095048 is an apocalyptic number.

It is an amenable number.

81095048 is a deficient number, since it is larger than the sum of its proper divisors (74667412).

81095048 is a wasteful number, since it uses less digits than its factorization.

81095048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247288 (or 247284 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 81095048 is about 9005.2788962919. The cubic root of 81095048 is about 432.8440431329.

The spelling of 81095048 in words is "eighty-one million, ninety-five thousand, forty-eight".