55481480 has 16 divisors (see below), whose sum is σ = 124833420. Its totient is φ = 22192576.

The previous prime is 55481473. The next prime is 55481507. The reversal of 55481480 is 8418455.

It can be written as a sum of positive squares in 2 ways, for example, as 45508516 + 9972964 = 6746^2 + 3158^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 55481480.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 693479 + ... + 693558.

Almost surely, 2^55481480 is an apocalyptic number.

It is an amenable number.

55481480 is an abundant number, since it is smaller than the sum of its proper divisors (69351940).

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

55481480 is a wasteful number, since it uses less digits than its factorization.

55481480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387048 (or 1387044 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 35.

The square root of 55481480 is about 7448.5891281504. The cubic root of 55481480 is about 381.4017480665.

The spelling of 55481480 in words is "fifty-five million, four hundred eighty-one thousand, four hundred eighty".