55204161550501 has 2 divisors, whose sum is σ = 55204161550502. Its totient is φ = 55204161550500.

The previous prime is 55204161550493. The next prime is 55204161550513. The reversal of 55204161550501 is 10505516140255.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44484764696100 + 10719396854401 = 6669690^2 + 3274049^2 .

It is a cyclic number.

It is not a de Polignac number, because 55204161550501 - 2³ = 55204161550493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55204161550561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27602080775250 + 27602080775251.

It is an arithmetic number, because the mean of its divisors is an integer number (27602080775251).

Almost surely, 2^{55204161550501} is an apocalyptic number.

It is an amenable number.

55204161550501 is a deficient number, since it is larger than the sum of its proper divisors (1).

55204161550501 is an equidigital number, since it uses as much as digits as its factorization.

55204161550501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150000, while the sum is 40.

Adding to 55204161550501 its reverse (10505516140255), we get a palindrome (65709677690756).

The spelling of 55204161550501 in words is "fifty-five trillion, two hundred four billion, one hundred sixty-one million, five hundred fifty thousand, five hundred one".