55043253321 has 16 divisors (see below), whose sum is σ = 87522192384. Its totient is φ = 30085753104.

The previous prime is 55043253313. The next prime is 55043253329. The reversal of 55043253321 is 12335234055.

It is an interprime number because it is at equal distance from previous prime (55043253313) and next prime (55043253329).

It is not a de Polignac number, because 55043253321 - 2³ = 55043253313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55043253329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56980111 + ... + 56981076.

It is an arithmetic number, because the mean of its divisors is an integer number (5470137024).

Almost surely, 2^55043253321 is an apocalyptic number.

It is an amenable number.

55043253321 is a deficient number, since it is larger than the sum of its proper divisors (32478939063).

55043253321 is a wasteful number, since it uses less digits than its factorization.

55043253321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113961220.

The product of its (nonzero) digits is 54000, while the sum is 33.

Adding to 55043253321 its reverse (12335234055), we get a palindrome (67378487376).

The spelling of 55043253321 in words is "fifty-five billion, forty-three million, two hundred fifty-three thousand, three hundred twenty-one".