81054960 has 80 divisors (see below), whose sum is σ = 287172096. Its totient is φ = 18526464.

The previous prime is 81054937. The next prime is 81054977. The reversal of 81054960 is 6945018.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 22444 + ... + 25803.

Almost surely, 2^81054960 is an apocalyptic number.

81054960 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

81054960 is an abundant number, since it is smaller than the sum of its proper divisors (206117136).

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

81054960 is a wasteful number, since it uses less digits than its factorization.

81054960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48270 (or 48264 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 81054960 is about 9003.0528155732. The cubic root of 81054960 is about 432.7727082716.

Adding to 81054960 its reverse (6945018), we get a palindrome (87999978).

The spelling of 81054960 in words is "eighty-one million, fifty-four thousand, nine hundred sixty".