55023120 has 60 divisors (see below), whose sum is σ = 184788396. Its totient is φ = 14672640.

The previous prime is 55023119. The next prime is 55023127. The reversal of 55023120 is 2132055.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9217296 + 45805824 = 3036^2 + 6768^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 55023093 and 55023102.

It is not an unprimeable number, because it can be changed into a prime (55023127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37491 + ... + 38930.

Almost surely, 2^55023120 is an apocalyptic number.

It is an amenable number.

55023120 is an abundant number, since it is smaller than the sum of its proper divisors (129765276).

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

55023120 is a wasteful number, since it uses less digits than its factorization.

55023120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76440 (or 76431 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 55023120 is about 7417.7570734016. The cubic root of 55023120 is about 380.3485260420.

Adding to 55023120 its reverse (2132055), we get a palindrome (57155175).

The spelling of 55023120 in words is "fifty-five million, twenty-three thousand, one hundred twenty".