5204406521 has 2 divisors, whose sum is σ = 5204406522. Its totient is φ = 5204406520.

The previous prime is 5204406481. The next prime is 5204406583. The reversal of 5204406521 is 1256044025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3556452496 + 1647954025 = 59636^2 + 40595^2 .

It is a cyclic number.

It is not a de Polignac number, because 5204406521 - 2²⁶ = 5137297657 is a prime.

It is not a weakly prime, because it can be changed into another prime (5204403521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2602203260 + 2602203261.

It is an arithmetic number, because the mean of its divisors is an integer number (2602203261).

Almost surely, 2^5204406521 is an apocalyptic number.

It is an amenable number.

5204406521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5204406521 is an equidigital number, since it uses as much as digits as its factorization.

5204406521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 5204406521 is about 72141.5727649460. The cubic root of 5204406521 is about 1732.9674444129.

The spelling of 5204406521 in words is "five billion, two hundred four million, four hundred six thousand, five hundred twenty-one".