5521579164 has 72 divisors (see below), whose sum is σ = 14521306800. Its totient is φ = 1834545024.

The previous prime is 5521579163. The next prime is 5521579181. The reversal of 5521579164 is 4619751255.

It is a happy number.

5521579164 is a `hidden beast` number, since 55 + 21 + 579 + 1 + 6 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5521579163) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 295162 + ... + 313310.

Almost surely, 2^5521579164 is an apocalyptic number.

5521579164 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5521579164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7260653400).

5521579164 is an abundant number, since it is smaller than the sum of its proper divisors (8999727636).

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

5521579164 is a wasteful number, since it uses less digits than its factorization.

5521579164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18481 (or 18467 counting only the distinct ones).

The product of its digits is 378000, while the sum is 45.

The square root of 5521579164 is about 74307.3291405363. The cubic root of 5521579164 is about 1767.4796994628.

The spelling of 5521579164 in words is "five billion, five hundred twenty-one million, five hundred seventy-nine thousand, one hundred sixty-four".