81103053 has 8 divisors (see below), whose sum is σ = 111866400. Its totient is φ = 52204208.

The previous prime is 81103051. The next prime is 81103069. The reversal of 81103053 is 35030118.

It is a happy number.

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 81103053 - 2¹ = 81103051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81103051) 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, 466023 + ... + 466196.

It is an arithmetic number, because the mean of its divisors is an integer number (13983300).

Almost surely, 2^81103053 is an apocalyptic number.

It is an amenable number.

81103053 is a deficient number, since it is larger than the sum of its proper divisors (30763347).

81103053 is a wasteful number, since it uses less digits than its factorization.

81103053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932251.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 81103053 is about 9005.7233468500. The cubic root of 81103053 is about 432.8582848679.

The spelling of 81103053 in words is "eighty-one million, one hundred three thousand, fifty-three".