55418710321 has 4 divisors (see below), whose sum is σ = 59681688052. Its totient is φ = 51155732592.

The previous prime is 55418710307. The next prime is 55418710337. The reversal of 55418710321 is 12301781455.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4107399921 + 51311310400 = 64089^2 + 226520^2 .

It is a cyclic number.

It is not a de Polignac number, because 55418710321 - 2¹¹ = 55418708273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55418710121) 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 3 ways as a sum of consecutive naturals, for example, 2131488846 + ... + 2131488871.

It is an arithmetic number, because the mean of its divisors is an integer number (14920422013).

Almost surely, 2^55418710321 is an apocalyptic number.

It is an amenable number.

55418710321 is a deficient number, since it is larger than the sum of its proper divisors (4262977731).

55418710321 is a wasteful number, since it uses less digits than its factorization.

55418710321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4262977730.

The product of its (nonzero) digits is 33600, while the sum is 37.

The spelling of 55418710321 in words is "fifty-five billion, four hundred eighteen million, seven hundred ten thousand, three hundred twenty-one".