55566530 has 8 divisors (see below), whose sum is σ = 100019772. Its totient is φ = 22226608.

The previous prime is 55566509. The next prime is 55566559. The reversal of 55566530 is 3566555.

55566530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 55547209 + 19321 = 7453^2 + 139^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2778317 + ... + 2778336.

Almost surely, 2^55566530 is an apocalyptic number.

55566530 is a deficient number, since it is larger than the sum of its proper divisors (44453242).

55566530 is a wasteful number, since it uses less digits than its factorization.

55566530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5556660.

The product of its (nonzero) digits is 67500, while the sum is 35.

The square root of 55566530 is about 7454.2960767600. The cubic root of 55566530 is about 381.5965377359.

The spelling of 55566530 in words is "fifty-five million, five hundred sixty-six thousand, five hundred thirty".