551102101 has 4 divisors (see below), whose sum is σ = 601202304. Its totient is φ = 501001900.

The previous prime is 551102099. The next prime is 551102117. The reversal of 551102101 is 101201155.

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 551102101 - 2¹ = 551102099 is a prime.

It is a super-2 number, since 2×551102101² = 607427051453228402, which 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 (551102191) 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, 25050085 + ... + 25050106.

It is an arithmetic number, because the mean of its divisors is an integer number (150300576).

Almost surely, 2^551102101 is an apocalyptic number.

It is an amenable number.

551102101 is a deficient number, since it is larger than the sum of its proper divisors (50100203).

551102101 is a wasteful number, since it uses less digits than its factorization.

551102101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50100202.

The product of its (nonzero) digits is 50, while the sum is 16.

The square root of 551102101 is about 23475.5639122897. The cubic root of 551102101 is about 819.8681629214.

Adding to 551102101 its reverse (101201155), we get a palindrome (652303256).

It can be divided in two parts, 55 and 1102101, that multiplied together give a triangular number (60615555 = T₁₁₀₁₀).

The spelling of 551102101 in words is "five hundred fifty-one million, one hundred two thousand, one hundred one".