55506040253 has 4 divisors (see below), whose sum is σ = 55644459708. Its totient is φ = 55367620800.

The previous prime is 55506040217. The next prime is 55506040267. The reversal of 55506040253 is 35204060555.

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 51741236089 + 3764804164 = 227467^2 + 61358^2 .

It is a cyclic number.

It is not a de Polignac number, because 55506040253 - 2⁶ = 55506040189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55506040273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69209126 + ... + 69209927.

It is an arithmetic number, because the mean of its divisors is an integer number (13911114927).

Almost surely, 2^55506040253 is an apocalyptic number.

It is an amenable number.

55506040253 is a deficient number, since it is larger than the sum of its proper divisors (138419455).

55506040253 is a wasteful number, since it uses less digits than its factorization.

55506040253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138419454.

The product of its (nonzero) digits is 90000, while the sum is 35.

The spelling of 55506040253 in words is "fifty-five billion, five hundred six million, forty thousand, two hundred fifty-three".