55550480 has 20 divisors (see below), whose sum is σ = 129155052. Its totient is φ = 22220160.

The previous prime is 55550479. The next prime is 55550483. The reversal of 55550480 is 8405555.

It can be written as a sum of positive squares in 2 ways, for example, as 10445824 + 45104656 = 3232^2 + 6716^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (55550483) by changing a digit.

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, 347111 + ... + 347270.

Almost surely, 2^55550480 is an apocalyptic number.

It is an amenable number.

55550480 is an abundant number, since it is smaller than the sum of its proper divisors (73604572).

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

55550480 is a wasteful number, since it uses less digits than its factorization.

55550480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694394 (or 694388 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 32.

The square root of 55550480 is about 7453.2194386050. The cubic root of 55550480 is about 381.5597937091.

The spelling of 55550480 in words is "fifty-five million, five hundred fifty thousand, four hundred eighty".