55645120 has 28 divisors (see below), whose sum is σ = 132505704. Its totient is φ = 22257920.

The previous prime is 55645111. The next prime is 55645127. The reversal of 55645120 is 2154655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55645127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86626 + ... + 87265.

Almost surely, 2^55645120 is an apocalyptic number.

It is an amenable number.

55645120 is an abundant number, since it is smaller than the sum of its proper divisors (76860584).

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

55645120 is a wasteful number, since it uses less digits than its factorization.

55645120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173908 (or 173898 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 55645120 is about 7459.5656710026. The cubic root of 55645120 is about 381.7763554815.

Adding to 55645120 its reverse (2154655), we get a palindrome (57799775).

The spelling of 55645120 in words is "fifty-five million, six hundred forty-five thousand, one hundred twenty".