550512561 has 8 divisors (see below), whose sum is σ = 734173504. Its totient is φ = 366930000.

The previous prime is 550512559. The next prime is 550512569. The reversal of 550512561 is 165215055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 550512561 - 2¹ = 550512559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550512569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 565 + ... + 33186.

It is an arithmetic number, because the mean of its divisors is an integer number (91771688).

Almost surely, 2^550512561 is an apocalyptic number.

It is an amenable number.

550512561 is a deficient number, since it is larger than the sum of its proper divisors (183660943).

550512561 is a wasteful number, since it uses less digits than its factorization.

550512561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39191.

The product of its (nonzero) digits is 7500, while the sum is 30.

The square root of 550512561 is about 23463.0040915480. The cubic root of 550512561 is about 819.5757080201.

The spelling of 550512561 in words is "five hundred fifty million, five hundred twelve thousand, five hundred sixty-one".