5551566101 has 4 divisors (see below), whose sum is σ = 5606532204. Its totient is φ = 5496600000.

The previous prime is 5551566089. The next prime is 5551566107. The reversal of 5551566101 is 1016651555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1016651555 = 5 ⋅203330311.

It can be written as a sum of positive squares in 2 ways, for example, as 4319907076 + 1231659025 = 65726^2 + 35095^2 .

It is a cyclic number.

It is not a de Polignac number, because 5551566101 - 2¹⁰ = 5551565077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5551566107) 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, 27482900 + ... + 27483101.

It is an arithmetic number, because the mean of its divisors is an integer number (1401633051).

Almost surely, 2^5551566101 is an apocalyptic number.

It is an amenable number.

5551566101 is a deficient number, since it is larger than the sum of its proper divisors (54966103).

5551566101 is a wasteful number, since it uses less digits than its factorization.

5551566101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54966102.

The product of its (nonzero) digits is 22500, while the sum is 35.

The square root of 5551566101 is about 74508.8323690554. The cubic root of 5551566101 is about 1770.6735709788.

The spelling of 5551566101 in words is "five billion, five hundred fifty-one million, five hundred sixty-six thousand, one hundred one".