5550778637 has 4 divisors (see below), whose sum is σ = 5550949536. Its totient is φ = 5550607740.

The previous prime is 5550778543. The next prime is 5550778663. The reversal of 5550778637 is 7368770555.

It is a happy number.

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 5550778637 - 2¹⁴ = 5550762253 is a prime.

It is a super-2 number, since 2×5550778637² = 61622286953951155538, 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 (5550778837) 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, 20039 + ... + 107252.

It is an arithmetic number, because the mean of its divisors is an integer number (1387737384).

Almost surely, 2^5550778637 is an apocalyptic number.

It is an amenable number.

5550778637 is a deficient number, since it is larger than the sum of its proper divisors (170899).

5550778637 is a wasteful number, since it uses less digits than its factorization.

5550778637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170898.

The product of its (nonzero) digits is 6174000, while the sum is 53.

The square root of 5550778637 is about 74503.5478148524. The cubic root of 5550778637 is about 1770.5898463986.

The spelling of 5550778637 in words is "five billion, five hundred fifty million, seven hundred seventy-eight thousand, six hundred thirty-seven".