5134215521 has 4 divisors (see below), whose sum is σ = 5134993200. Its totient is φ = 5133437844.

The previous prime is 5134215467. The next prime is 5134215551. The reversal of 5134215521 is 1255124315.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1255124315 = 5 ⋅251024863.

It is a cyclic number.

It is not a de Polignac number, because 5134215521 - 2¹⁰ = 5134214497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5134215551) 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, 378851 + ... + 392168.

It is an arithmetic number, because the mean of its divisors is an integer number (1283748300).

Almost surely, 2^5134215521 is an apocalyptic number.

It is an amenable number.

5134215521 is a deficient number, since it is larger than the sum of its proper divisors (777679).

5134215521 is an equidigital number, since it uses as much as digits as its factorization.

5134215521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777678.

The product of its digits is 6000, while the sum is 29.

The square root of 5134215521 is about 71653.4403989090. The cubic root of 5134215521 is about 1725.1414036293.

Adding to 5134215521 its reverse (1255124315), we get a palindrome (6389339836).

The spelling of 5134215521 in words is "five billion, one hundred thirty-four million, two hundred fifteen thousand, five hundred twenty-one".