55332313 has 4 divisors (see below), whose sum is σ = 58244560. Its totient is φ = 52420068.

The previous prime is 55332287. The next prime is 55332317. The reversal of 55332313 is 31323355.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55332313 - 2⁵ = 55332281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55332317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1456095 + ... + 1456132.

It is an arithmetic number, because the mean of its divisors is an integer number (14561140).

Almost surely, 2^55332313 is an apocalyptic number.

It is an amenable number.

55332313 is a deficient number, since it is larger than the sum of its proper divisors (2912247).

55332313 is a wasteful number, since it uses less digits than its factorization.

55332313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2912246.

The product of its digits is 4050, while the sum is 25.

The square root of 55332313 is about 7438.5692844794. The cubic root of 55332313 is about 381.0596301935.

Adding to 55332313 its reverse (31323355), we get a palindrome (86655668).

The spelling of 55332313 in words is "fifty-five million, three hundred thirty-two thousand, three hundred thirteen".