55509748 has 24 divisors (see below), whose sum is σ = 113288000. Its totient is φ = 23789304.

The previous prime is 55509733. The next prime is 55509749. The reversal of 55509748 is 84790555.

55509748 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55509749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18858 + ... + 21601.

Almost surely, 2^55509748 is an apocalyptic number.

It is an amenable number.

55509748 is an abundant number, since it is smaller than the sum of its proper divisors (57778252).

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

55509748 is a wasteful number, since it uses less digits than its factorization.

55509748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40484 (or 40468 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 43.

The square root of 55509748 is about 7450.4864270731. The cubic root of 55509748 is about 381.4665122248.

The spelling of 55509748 in words is "fifty-five million, five hundred nine thousand, seven hundred forty-eight".