55532221405321 has 4 divisors (see below), whose sum is σ = 57946665814272. Its totient is φ = 53117776996372.

The previous prime is 55532221405319. The next prime is 55532221405333. The reversal of 55532221405321 is 12350412223555.

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 55532221405321 - 2¹ = 55532221405319 is a prime.

It is a super-2 number, since 2×55532221405321² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55532221405301) 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, 1207222204441 + ... + 1207222204486.

It is an arithmetic number, because the mean of its divisors is an integer number (14486666453568).

Almost surely, 2^{55532221405321} is an apocalyptic number.

It is an amenable number.

55532221405321 is a deficient number, since it is larger than the sum of its proper divisors (2414444408951).

55532221405321 is a wasteful number, since it uses less digits than its factorization.

55532221405321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2414444408950.

The product of its (nonzero) digits is 360000, while the sum is 40.

Adding to 55532221405321 its reverse (12350412223555), we get a palindrome (67882633628876).

The spelling of 55532221405321 in words is "fifty-five trillion, five hundred thirty-two billion, two hundred twenty-one million, four hundred five thousand, three hundred twenty-one".