550000561061 has 4 divisors (see below), whose sum is σ = 628572069792. Its totient is φ = 471429052332.

The previous prime is 550000561049. The next prime is 550000561151. The reversal of 550000561061 is 160165000055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-550000561061 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 (550000561001) 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, 39285754355 + ... + 39285754368.

It is an arithmetic number, because the mean of its divisors is an integer number (157143017448).

Almost surely, 2^550000561061 is an apocalyptic number.

It is an amenable number.

550000561061 is a deficient number, since it is larger than the sum of its proper divisors (78571508731).

550000561061 is an equidigital number, since it uses as much as digits as its factorization.

550000561061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78571508730.

The product of its (nonzero) digits is 4500, while the sum is 29.

The spelling of 550000561061 in words is "five hundred fifty billion, five hundred sixty-one thousand, sixty-one".