55125213 has 32 divisors (see below), whose sum is σ = 90908160. Its totient is φ = 29211840.

The previous prime is 55125199. The next prime is 55125221. The reversal of 55125213 is 31252155.

It is a happy number.

55125213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55125213 - 2¹⁴ = 55108829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55125233) 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 31 ways as a sum of consecutive naturals, for example, 4770 + ... + 11532.

It is an arithmetic number, because the mean of its divisors is an integer number (2840880).

Almost surely, 2^55125213 is an apocalyptic number.

It is an amenable number.

55125213 is a deficient number, since it is larger than the sum of its proper divisors (35782947).

55125213 is a wasteful number, since it uses less digits than its factorization.

55125213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6809.

The product of its digits is 1500, while the sum is 24.

The square root of 55125213 is about 7424.6355466110. The cubic root of 55125213 is about 380.5836207345.

Adding to 55125213 its reverse (31252155), we get a palindrome (86377368).

The spelling of 55125213 in words is "fifty-five million, one hundred twenty-five thousand, two hundred thirteen".