5221001601 has 6 divisors (see below), whose sum is σ = 7541446770. Its totient is φ = 3480667728.

The previous prime is 5221001593. The next prime is 5221001603. The reversal of 5221001601 is 1061001225.

5221001601 is a `hidden beast` number, since 52 + 2 + 10 + 0 + 1 + 601 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4911206400 + 309795201 = 70080^2 + 17601^2 .

It is not a de Polignac number, because 5221001601 - 2³ = 5221001593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5221001603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 290055636 + ... + 290055653.

It is an arithmetic number, because the mean of its divisors is an integer number (1256907795).

Almost surely, 2^5221001601 is an apocalyptic number.

It is an amenable number.

5221001601 is a deficient number, since it is larger than the sum of its proper divisors (2320445169).

5221001601 is a wasteful number, since it uses less digits than its factorization.

5221001601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580111295 (or 580111292 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 5221001601 is about 72256.4986765896. The cubic root of 5221001601 is about 1734.8074377613.

Adding to 5221001601 its reverse (1061001225), we get a palindrome (6282002826).

The spelling of 5221001601 in words is "five billion, two hundred twenty-one million, one thousand, six hundred one".