55235213 has 16 divisors (see below), whose sum is σ = 63213696. Its totient is φ = 47773440.

The previous prime is 55235209. The next prime is 55235251. The reversal of 55235213 is 31253255.

55235213 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 55235213 - 2² = 55235209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55235203) 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 15 ways as a sum of consecutive naturals, for example, 58481 + ... + 59417.

It is an arithmetic number, because the mean of its divisors is an integer number (3950856).

Almost surely, 2^55235213 is an apocalyptic number.

It is an amenable number.

55235213 is a deficient number, since it is larger than the sum of its proper divisors (7978483).

55235213 is a wasteful number, since it uses less digits than its factorization.

55235213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204.

The product of its digits is 4500, while the sum is 26.

The square root of 55235213 is about 7432.0396258362. The cubic root of 55235213 is about 380.8365986416.

Adding to 55235213 its reverse (31253255), we get a palindrome (86488468).

The spelling of 55235213 in words is "fifty-five million, two hundred thirty-five thousand, two hundred thirteen".