55256320201 has 16 divisors (see below), whose sum is σ = 59434214400. Its totient is φ = 51216656400.

The previous prime is 55256320157. The next prime is 55256320219. The reversal of 55256320201 is 10202365255.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 55256320201 - 2³³ = 46666385609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55256320291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20380 + ... + 333058.

It is an arithmetic number, because the mean of its divisors is an integer number (3714638400).

Almost surely, 2^55256320201 is an apocalyptic number.

It is an amenable number.

55256320201 is a deficient number, since it is larger than the sum of its proper divisors (4177894199).

55256320201 is a wasteful number, since it uses less digits than its factorization.

55256320201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312900.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 55256320201 its reverse (10202365255), we get a palindrome (65458685456).

The spelling of 55256320201 in words is "fifty-five billion, two hundred fifty-six million, three hundred twenty thousand, two hundred one".