55321345501 has 2 divisors, whose sum is σ = 55321345502. Its totient is φ = 55321345500.

The previous prime is 55321345451. The next prime is 55321345531. The reversal of 55321345501 is 10554312355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47164546276 + 8156799225 = 217174^2 + 90315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55321345501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55321345531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27660672750 + 27660672751.

It is an arithmetic number, because the mean of its divisors is an integer number (27660672751).

Almost surely, 2^55321345501 is an apocalyptic number.

It is an amenable number.

55321345501 is a deficient number, since it is larger than the sum of its proper divisors (1).

55321345501 is an equidigital number, since it uses as much as digits as its factorization.

55321345501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45000, while the sum is 34.

Adding to 55321345501 its reverse (10554312355), we get a palindrome (65875657856).

The spelling of 55321345501 in words is "fifty-five billion, three hundred twenty-one million, three hundred forty-five thousand, five hundred one".