55453321 has 8 divisors (see below), whose sum is σ = 69136704. Its totient is φ = 43210320.

The previous prime is 55453291. The next prime is 55453367. The reversal of 55453321 is 12335455.

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 55453321 - 2⁵ = 55453289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55453321.

It is not an unprimeable number, because it can be changed into a prime (55453721) 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, 360010 + ... + 360163.

It is an arithmetic number, because the mean of its divisors is an integer number (8642088).

Almost surely, 2^55453321 is an apocalyptic number.

It is an amenable number.

55453321 is a deficient number, since it is larger than the sum of its proper divisors (13683383).

55453321 is a wasteful number, since it uses less digits than its factorization.

55453321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720191.

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

The square root of 55453321 is about 7446.6986645090. The cubic root of 55453321 is about 381.3372117605.

Adding to 55453321 its reverse (12335455), we get a palindrome (67788776).

The spelling of 55453321 in words is "fifty-five million, four hundred fifty-three thousand, three hundred twenty-one".