55571120 has 40 divisors (see below), whose sum is σ = 140950800. Its totient is φ = 20207360.

The previous prime is 55571119. The next prime is 55571123. The reversal of 55571120 is 2117555.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 55571120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55571123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30695 + ... + 32454.

It is an arithmetic number, because the mean of its divisors is an integer number (3523770).

Almost surely, 2^55571120 is an apocalyptic number.

It is an amenable number.

55571120 is an abundant number, since it is smaller than the sum of its proper divisors (85379680).

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

55571120 is a wasteful number, since it uses less digits than its factorization.

55571120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63173 (or 63167 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 26.

The square root of 55571120 is about 7454.6039465554. The cubic root of 55571120 is about 381.6070445397.

Adding to 55571120 its reverse (2117555), we get a palindrome (57688675).

It can be divided in two parts, 55 and 571120, that added together give a palindrome (571175).

The spelling of 55571120 in words is "fifty-five million, five hundred seventy-one thousand, one hundred twenty".