5256921601 has 2 divisors, whose sum is σ = 5256921602. Its totient is φ = 5256921600.

The previous prime is 5256921599. The next prime is 5256921617. The reversal of 5256921601 is 1061296525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3429273600 + 1827648001 = 58560^2 + 42751^2 .

It is a cyclic number.

It is not a de Polignac number, because 5256921601 - 2¹ = 5256921599 is a prime.

It is a super-3 number, since 3×5256921601³ (a number of 30 digits) contains 333 as substring.

Together with 5256921599, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5256921671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2628460800 + 2628460801.

It is an arithmetic number, because the mean of its divisors is an integer number (2628460801).

Almost surely, 2^5256921601 is an apocalyptic number.

It is an amenable number.

5256921601 is a deficient number, since it is larger than the sum of its proper divisors (1).

5256921601 is an equidigital number, since it uses as much as digits as its factorization.

5256921601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 5256921601 is about 72504.6315830927. The cubic root of 5256921601 is about 1738.7767860564.

The spelling of 5256921601 in words is "five billion, two hundred fifty-six million, nine hundred twenty-one thousand, six hundred one".