55645430 has 16 divisors (see below), whose sum is σ = 100379520. Its totient is φ = 22209792.

The previous prime is 55645423. The next prime is 55645439. The reversal of 55645430 is 3454655.

55645430 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 (55645439) 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, 1019 + ... + 10598.

It is an arithmetic number, because the mean of its divisors is an integer number (6273720).

Almost surely, 2^55645430 is an apocalyptic number.

55645430 is a deficient number, since it is larger than the sum of its proper divisors (44734090).

55645430 is a wasteful number, since it uses less digits than its factorization.

55645430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12103.

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 55645430 is about 7459.5864496633. The cubic root of 55645430 is about 381.7770644413. Note that the first 3 decimals are identical.

The spelling of 55645430 in words is "fifty-five million, six hundred forty-five thousand, four hundred thirty".