5516220551 has 4 divisors (see below), whose sum is σ = 5516474592. Its totient is φ = 5515966512.

The previous prime is 5516220547. The next prime is 5516220553. The reversal of 5516220551 is 1550226155.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1550226155 = 5 ⋅310045231.

It is a cyclic number.

It is not a de Polignac number, because 5516220551 - 2² = 5516220547 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 (5516220553) 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, 91055 + ... + 139008.

It is an arithmetic number, because the mean of its divisors is an integer number (1379118648).

Almost surely, 2^5516220551 is an apocalyptic number.

5516220551 is a deficient number, since it is larger than the sum of its proper divisors (254041).

5516220551 is a wasteful number, since it uses less digits than its factorization.

5516220551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254040.

The product of its (nonzero) digits is 15000, while the sum is 32.

The square root of 5516220551 is about 74271.2632920701. The cubic root of 5516220551 is about 1766.9077432062.

The spelling of 5516220551 in words is "five billion, five hundred sixteen million, two hundred twenty thousand, five hundred fifty-one".