551550011 has 4 divisors (see below), whose sum is σ = 556704792. Its totient is φ = 546395232.

The previous prime is 551550007. The next prime is 551550017. The reversal of 551550011 is 110055155.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 551550011 - 2² = 551550007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551550017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2577230 + ... + 2577443.

It is an arithmetic number, because the mean of its divisors is an integer number (139176198).

Almost surely, 2^551550011 is an apocalyptic number.

551550011 is a deficient number, since it is larger than the sum of its proper divisors (5154781).

551550011 is a wasteful number, since it uses less digits than its factorization.

551550011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5154780.

The product of its (nonzero) digits is 625, while the sum is 23.

The square root of 551550011 is about 23485.1018946054. The cubic root of 551550011 is about 820.0902195994.

The spelling of 551550011 in words is "five hundred fifty-one million, five hundred fifty thousand, eleven".