55507201 has 4 divisors (see below), whose sum is σ = 55522132. Its totient is φ = 55492272.

The previous prime is 55507187. The next prime is 55507237. The reversal of 55507201 is 10270555.

It is a happy number.

55507201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 16769025 + 38738176 = 4095^2 + 6224^2 .

It is a cyclic number.

It is not a de Polignac number, because 55507201 - 2⁵ = 55507169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55507241) 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 3 ways as a sum of consecutive naturals, for example, 3031 + ... + 10963.

It is an arithmetic number, because the mean of its divisors is an integer number (13880533).

Almost surely, 2^55507201 is an apocalyptic number.

It is an amenable number.

55507201 is a deficient number, since it is larger than the sum of its proper divisors (14931).

55507201 is an equidigital number, since it uses as much as digits as its factorization.

55507201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14930.

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 55507201 is about 7450.3154966753. The cubic root of 55507201 is about 381.4606777537.

Adding to 55507201 its reverse (10270555), we get a palindrome (65777756).

The spelling of 55507201 in words is "fifty-five million, five hundred seven thousand, two hundred one".