81469055 has 8 divisors (see below), whose sum is σ = 102908400. Its totient is φ = 61744896.

The previous prime is 81469043. The next prime is 81469057. The reversal of 81469055 is 55096418.

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 81469055 - 2²² = 77274751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81469057) 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, 428690 + ... + 428879.

It is an arithmetic number, because the mean of its divisors is an integer number (12863550).

Almost surely, 2^81469055 is an apocalyptic number.

81469055 is a deficient number, since it is larger than the sum of its proper divisors (21439345).

81469055 is a wasteful number, since it uses less digits than its factorization.

81469055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857593.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 81469055 is about 9026.0209948792. The cubic root of 81469055 is about 433.5084423785.

The spelling of 81469055 in words is "eighty-one million, four hundred sixty-nine thousand, fifty-five".