55420341321 has 32 divisors (see below), whose sum is σ = 76954014720. Its totient is φ = 35448243264.

The previous prime is 55420341271. The next prime is 55420341323. The reversal of 55420341321 is 12314302455.

It is not a de Polignac number, because 55420341321 - 2²¹ = 55418244169 is a prime.

It is a super-2 number, since 2×55420341321² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55420341323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14710180 + ... + 14713946.

It is an arithmetic number, because the mean of its divisors is an integer number (2404812960).

Almost surely, 2^55420341321 is an apocalyptic number.

It is an amenable number.

55420341321 is a deficient number, since it is larger than the sum of its proper divisors (21533673399).

55420341321 is a wasteful number, since it uses less digits than its factorization.

55420341321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5805.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 55420341321 its reverse (12314302455), we get a palindrome (67734643776).

The spelling of 55420341321 in words is "fifty-five billion, four hundred twenty million, three hundred forty-one thousand, three hundred twenty-one".