550550263553 has 4 divisors (see below), whose sum is σ = 550627497540. Its totient is φ = 550473029568.

The previous prime is 550550263547. The next prime is 550550263639. The reversal of 550550263553 is 355362055055.

It is a happy number.

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 129119486224 + 421430777329 = 359332^2 + 649177^2 .

It is a cyclic number.

It is not a de Polignac number, because 550550263553 - 2⁴ = 550550263537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550550263253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38606300 + ... + 38620557.

It is an arithmetic number, because the mean of its divisors is an integer number (137656874385).

Almost surely, 2^550550263553 is an apocalyptic number.

It is an amenable number.

550550263553 is a deficient number, since it is larger than the sum of its proper divisors (77233987).

550550263553 is an equidigital number, since it uses as much as digits as its factorization.

550550263553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77233986.

The product of its (nonzero) digits is 1687500, while the sum is 44.

The spelling of 550550263553 in words is "five hundred fifty billion, five hundred fifty million, two hundred sixty-three thousand, five hundred fifty-three".