5665511550 has 24 divisors (see below), whose sum is σ = 14050469016. Its totient is φ = 1510803040.

The previous prime is 5665511549. The next prime is 5665511557. The reversal of 5665511550 is 551155665.

It is a super-2 number, since 2×5665511550² = 64196042246366805000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5665511499 and 5665511508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5665511557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18884889 + ... + 18885188.

It is an arithmetic number, because the mean of its divisors is an integer number (585436209).

Almost surely, 2^5665511550 is an apocalyptic number.

5665511550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

5665511550 is an abundant number, since it is smaller than the sum of its proper divisors (8384957466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5665511550 is a wasteful number, since it uses less digits than its factorization.

5665511550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37770092 (or 37770087 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 39.

The square root of 5665511550 is about 75269.5924660151. The cubic root of 5665511550 is about 1782.7059325766.

The spelling of 5665511550 in words is "five billion, six hundred sixty-five million, five hundred eleven thousand, five hundred fifty".