551000101011 has 4 divisors (see below), whose sum is σ = 734666801352. Its totient is φ = 367333400672.

The previous prime is 551000101009. The next prime is 551000101031. The reversal of 551000101011 is 110101000155.

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 551000101011 - 2¹ = 551000101009 is a prime.

It is a super-2 number, since 2×551000101011² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (551000101031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91833350166 + ... + 91833350171.

It is an arithmetic number, because the mean of its divisors is an integer number (183666700338).

Almost surely, 2^551000101011 is an apocalyptic number.

551000101011 is a deficient number, since it is larger than the sum of its proper divisors (183666700341).

551000101011 is a wasteful number, since it uses less digits than its factorization.

551000101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183666700340.

The product of its (nonzero) digits is 25, while the sum is 15.

Adding to 551000101011 its reverse (110101000155), we get a palindrome (661101101166).

The spelling of 551000101011 in words is "five hundred fifty-one billion, one hundred one thousand, eleven".