55530570 has 16 divisors (see below), whose sum is σ = 133273440. Its totient is φ = 14808144.

The previous prime is 55530529. The next prime is 55530577. The reversal of 55530570 is 7503555.

55530570 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 1851019 = 55530570 / (5 + 5 + 5 + 3 + 0 + 5 + 7 + 0).

It is not an unprimeable number, because it can be changed into a prime (55530577) 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, 925480 + ... + 925539.

It is an arithmetic number, because the mean of its divisors is an integer number (8329590).

Almost surely, 2^55530570 is an apocalyptic number.

55530570 is an abundant number, since it is smaller than the sum of its proper divisors (77742870).

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

55530570 is a wasteful number, since it uses less digits than its factorization.

55530570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851029.

The product of its (nonzero) digits is 13125, while the sum is 30.

The square root of 55530570 is about 7451.8836544863. The cubic root of 55530570 is about 381.5142029643.

It can be divided in two parts, 555 and 30570, that added together give a triangular number (31125 = T₂₄₉).

The spelling of 55530570 in words is "fifty-five million, five hundred thirty thousand, five hundred seventy".