83555105481 has 9 divisors (see below), whose sum is σ = 120691960519. Its totient is φ = 55702825536.

The previous prime is 83555105461. The next prime is 83555105483. The reversal of 83555105481 is 18450155538.

The square root of 83555105481 is 289059.

It is a perfect power (a square), and thus also a powerful number.

83555105481 is a `hidden beast` number, since 8 + 3 + 5 + 5 + 510 + 54 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5928230025 + 77626875456 = 76995^2 + 278616^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 83555105481 - 2¹¹ = 83555103433 is a prime.

It is a super-2 number, since 2×83555105481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83555105483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 819001 + ... + 915353.

Almost surely, 2^83555105481 is an apocalyptic number.

83555105481 is the 289059-th square number.

83555105481 is the 144530-th centered octagonal number.

It is an amenable number.

83555105481 is a deficient number, since it is larger than the sum of its proper divisors (37136855038).

83555105481 is an frugal number, since it uses more digits than its factorization.

83555105481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192712 (or 96356 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 45.

The spelling of 83555105481 in words is "eighty-three billion, five hundred fifty-five million, one hundred five thousand, four hundred eighty-one".