81883455 has 16 divisors (see below), whose sum is σ = 132288000. Its totient is φ = 43246368.

The previous prime is 81883453. The next prime is 81883489. The reversal of 81883455 is 55438818.

It is not a de Polignac number, because 81883455 - 2¹ = 81883453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81883453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24955 + ... + 28044.

It is an arithmetic number, because the mean of its divisors is an integer number (8268000).

Almost surely, 2^81883455 is an apocalyptic number.

81883455 is a deficient number, since it is larger than the sum of its proper divisors (50404545).

81883455 is a wasteful number, since it uses less digits than its factorization.

81883455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53110.

The product of its digits is 153600, while the sum is 42.

The square root of 81883455 is about 9048.9477288799. The cubic root of 81883455 is about 434.2422267630.

The spelling of 81883455 in words is "eighty-one million, eight hundred eighty-three thousand, four hundred fifty-five".