550031707121 has 4 divisors (see below), whose sum is σ = 592341838452. Its totient is φ = 507721575792.

The previous prime is 550031707111. The next prime is 550031707153. The reversal of 550031707121 is 121707130055.

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 66574320400 + 483457386721 = 258020^2 + 695311^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550031707121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (550031707111) 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, 21155065646 + ... + 21155065671.

It is an arithmetic number, because the mean of its divisors is an integer number (148085459613).

Almost surely, 2^550031707121 is an apocalyptic number.

It is an amenable number.

550031707121 is a deficient number, since it is larger than the sum of its proper divisors (42310131331).

550031707121 is a wasteful number, since it uses less digits than its factorization.

550031707121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42310131330.

The product of its (nonzero) digits is 7350, while the sum is 32.

Adding to 550031707121 its reverse (121707130055), we get a palindrome (671738837176).

The spelling of 550031707121 in words is "five hundred fifty billion, thirty-one million, seven hundred seven thousand, one hundred twenty-one".