5220601812 has 18 divisors (see below), whose sum is σ = 13196521338. Its totient is φ = 1740200592.

The previous prime is 5220601787. The next prime is 5220601817. The reversal of 5220601812 is 2181060225.

It is a happy number.

5220601812 is a `hidden beast` number, since 52 + 2 + 0 + 601 + 8 + 1 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2945884176 + 2274717636 = 54276^2 + 47694^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5220601817) 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 5 ways as a sum of consecutive naturals, for example, 72508323 + ... + 72508394.

Almost surely, 2^5220601812 is an apocalyptic number.

It is an amenable number.

5220601812 is an abundant number, since it is smaller than the sum of its proper divisors (7975919526).

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

5220601812 is a wasteful number, since it uses less digits than its factorization.

5220601812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145016727 (or 145016722 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 5220601812 is about 72253.7321665808. The cubic root of 5220601812 is about 1734.7631566898.

The spelling of 5220601812 in words is "five billion, two hundred twenty million, six hundred one thousand, eight hundred twelve".