55127320 has 32 divisors (see below), whose sum is σ = 129431520. Its totient is φ = 21091840.

The previous prime is 55127309. The next prime is 55127321. The reversal of 55127320 is 2372155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55127321) 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 7 ways as a sum of consecutive naturals, for example, 29041 + ... + 30880.

It is an arithmetic number, because the mean of its divisors is an integer number (4044735).

Almost surely, 2^55127320 is an apocalyptic number.

It is an amenable number.

55127320 is an abundant number, since it is smaller than the sum of its proper divisors (74304200).

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

55127320 is a wasteful number, since it uses less digits than its factorization.

55127320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59955 (or 59951 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 55127320 is about 7424.7774377418. Note that the first 3 decimals coincide. The cubic root of 55127320 is about 380.5884695713.

Adding to 55127320 its reverse (2372155), we get a palindrome (57499475).

The spelling of 55127320 in words is "fifty-five million, one hundred twenty-seven thousand, three hundred twenty".