55408535703481 has 45 divisors (see below), whose sum is σ = 58842960822331. Its totient is φ = 52174199858144.

The previous prime is 55408535703473. The next prime is 55408535703517. The reversal of 55408535703481 is 18430753580455.

The square root of 55408535703481 is 7443691.

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

It can be written as a sum of positive squares in 7 ways, for example, as 13102409075625 + 42306126627856 = 3619725^2 + 6504316^2 .

It is not a de Polignac number, because 55408535703481 - 2³ = 55408535703473 is a prime.

It is a super-2 number, since 2×55408535703481² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55408535700481) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 331787638860 + ... + 331787639026.

Almost surely, 2^{55408535703481} is an apocalyptic number.

55408535703481 is the 7443691-st square number.

55408535703481 is the 3721846-th centered octagonal number.

It is an amenable number.

55408535703481 is a deficient number, since it is larger than the sum of its proper divisors (3434425118850).

55408535703481 is an frugal number, since it uses more digits than its factorization.

55408535703481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 40320000, while the sum is 58.

The spelling of 55408535703481 in words is "fifty-five trillion, four hundred eight billion, five hundred thirty-five million, seven hundred three thousand, four hundred eighty-one".