81153048 has 32 divisors (see below), whose sum is σ = 205167600. Its totient is φ = 26746368.

The previous prime is 81153043. The next prime is 81153073. The reversal of 81153048 is 84035118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81153041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16861 + ... + 21132.

Almost surely, 2^81153048 is an apocalyptic number.

It is an amenable number.

81153048 is an abundant number, since it is smaller than the sum of its proper divisors (124014552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81153048 is a wasteful number, since it uses less digits than its factorization.

81153048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38091 (or 38087 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 81153048 is about 9008.4986540489. The cubic root of 81153048 is about 432.9472100232.

The spelling of 81153048 in words is "eighty-one million, one hundred fifty-three thousand, forty-eight".