551161605101 has 4 divisors (see below), whose sum is σ = 551447035104. Its totient is φ = 550876175100.

The previous prime is 551161605077. The next prime is 551161605103. The reversal of 551161605101 is 101506161155.

551161605101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 cyclic number.

It is not a de Polignac number, because 551161605101 - 2⁶ = 551161605037 is a prime.

It is a super-2 number, since 2×551161605101² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551161605103) 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, 142712105 + ... + 142715966.

It is an arithmetic number, because the mean of its divisors is an integer number (137861758776).

Almost surely, 2^551161605101 is an apocalyptic number.

It is an amenable number.

551161605101 is a deficient number, since it is larger than the sum of its proper divisors (285430003).

551161605101 is a wasteful number, since it uses less digits than its factorization.

551161605101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285430002.

The product of its (nonzero) digits is 4500, while the sum is 32.

Adding to 551161605101 its reverse (101506161155), we get a palindrome (652667766256).

The spelling of 551161605101 in words is "five hundred fifty-one billion, one hundred sixty-one million, six hundred five thousand, one hundred one".