55345213 has 16 divisors (see below), whose sum is σ = 69511680. Its totient is φ = 42807600.

The previous prime is 55345211. The next prime is 55345223. The reversal of 55345213 is 31254355.

It is not a de Polignac number, because 55345213 - 2¹ = 55345211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55345211) 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 15 ways as a sum of consecutive naturals, for example, 8118 + ... + 13288.

It is an arithmetic number, because the mean of its divisors is an integer number (4344480).

Almost surely, 2^55345213 is an apocalyptic number.

It is an amenable number.

55345213 is a deficient number, since it is larger than the sum of its proper divisors (14166467).

55345213 is a wasteful number, since it uses less digits than its factorization.

55345213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5328.

The product of its digits is 9000, while the sum is 28.

The square root of 55345213 is about 7439.4363361749. The cubic root of 55345213 is about 381.0892409038.

Adding to 55345213 its reverse (31254355), we get a palindrome (86599568).

The spelling of 55345213 in words is "fifty-five million, three hundred forty-five thousand, two hundred thirteen".