5258390521 has 4 divisors (see below), whose sum is σ = 5266913652. Its totient is φ = 5249867392.

The previous prime is 5258390509. The next prime is 5258390551. The reversal of 5258390521 is 1250938525.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2615299600 + 2643090921 = 51140^2 + 51411^2 .

It is a cyclic number.

It is not a de Polignac number, because 5258390521 - 2¹⁷ = 5258259449 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5258390551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4260640 + ... + 4261873.

It is an arithmetic number, because the mean of its divisors is an integer number (1316728413).

Almost surely, 2^5258390521 is an apocalyptic number.

It is an amenable number.

5258390521 is a deficient number, since it is larger than the sum of its proper divisors (8523131).

5258390521 is an equidigital number, since it uses as much as digits as its factorization.

5258390521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8523130.

The product of its (nonzero) digits is 108000, while the sum is 40.

The square root of 5258390521 is about 72514.7607111821. The cubic root of 5258390521 is about 1738.9387240581.

The spelling of 5258390521 in words is "five billion, two hundred fifty-eight million, three hundred ninety thousand, five hundred twenty-one".