55332813 has 8 divisors (see below), whose sum is σ = 74606400. Its totient is φ = 36473888.

The previous prime is 55332811. The next prime is 55332817. The reversal of 55332813 is 31823355.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55332813 - 2¹ = 55332811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55332811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103353 + ... + 103886.

It is an arithmetic number, because the mean of its divisors is an integer number (9325800).

Almost surely, 2^55332813 is an apocalyptic number.

It is an amenable number.

55332813 is a deficient number, since it is larger than the sum of its proper divisors (19273587).

55332813 is a wasteful number, since it uses less digits than its factorization.

55332813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207331.

The product of its digits is 10800, while the sum is 30.

The square root of 55332813 is about 7438.6028930169. The cubic root of 55332813 is about 381.0607779812.

The spelling of 55332813 in words is "fifty-five million, three hundred thirty-two thousand, eight hundred thirteen".