5541578166 has 64 divisors (see below), whose sum is σ = 11619256320. Its totient is φ = 1759864320.

The previous prime is 5541578149. The next prime is 5541578167. The reversal of 5541578166 is 6618751455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5541578167) 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 31 ways as a sum of consecutive naturals, for example, 6684240 + ... + 6685068.

It is an arithmetic number, because the mean of its divisors is an integer number (181550880).

Almost surely, 2^5541578166 is an apocalyptic number.

5541578166 is an abundant number, since it is smaller than the sum of its proper divisors (6077678154).

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

5541578166 is a wasteful number, since it uses less digits than its factorization.

5541578166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381.

The product of its digits is 1008000, while the sum is 48.

The square root of 5541578166 is about 74441.7770207026. Note that the first 3 decimals coincide. The cubic root of 5541578166 is about 1769.6110486286.

The spelling of 5541578166 in words is "five billion, five hundred forty-one million, five hundred seventy-eight thousand, one hundred sixty-six".