55418481 has 6 divisors (see below), whose sum is σ = 80048930. Its totient is φ = 36945648.

The previous prime is 55418479. The next prime is 55418491. The reversal of 55418481 is 18481455.

It can be written as a sum of positive squares in only one way, i.e., 45684081 + 9734400 = 6759^2 + 3120^2 .

It is not a de Polignac number, because 55418481 - 2¹ = 55418479 is a prime.

It is a super-2 number, since 2×55418481² = 6142416072694722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55418401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3078796 + ... + 3078813.

Almost surely, 2^55418481 is an apocalyptic number.

It is an amenable number.

55418481 is a deficient number, since it is larger than the sum of its proper divisors (24630449).

55418481 is a wasteful number, since it uses less digits than its factorization.

55418481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6157615 (or 6157612 counting only the distinct ones).

The product of its digits is 25600, while the sum is 36.

The square root of 55418481 is about 7444.3590053140. The cubic root of 55418481 is about 381.2573333356.

The spelling of 55418481 in words is "fifty-five million, four hundred eighteen thousand, four hundred eighty-one".