550561011 has 72 divisors (see below), whose sum is σ = 1011244752. Its totient is φ = 263894400.

The previous prime is 550561009. The next prime is 550561013. The reversal of 550561011 is 110165055.

It is an interprime number because it is at equal distance from previous prime (550561009) and next prime (550561013).

It is not a de Polignac number, because 550561011 - 2¹ = 550561009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (550561013) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 230041 + ... + 232421.

It is an arithmetic number, because the mean of its divisors is an integer number (14045066).

Almost surely, 2^550561011 is an apocalyptic number.

550561011 is a deficient number, since it is larger than the sum of its proper divisors (460683741).

550561011 is a wasteful number, since it uses less digits than its factorization.

550561011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2433 (or 2415 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 550561011 is about 23464.0365453176. The cubic root of 550561011 is about 819.5997506312.

The spelling of 550561011 in words is "five hundred fifty million, five hundred sixty-one thousand, eleven".