5204151521 has 4 divisors (see below), whose sum is σ = 5241591600. Its totient is φ = 5166711444.

The previous prime is 5204151439. The next prime is 5204151523. The reversal of 5204151521 is 1251514025.

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.

It is a cyclic number.

It is not a de Polignac number, because 5204151521 - 2²⁶ = 5137042657 is a prime.

It is a super-2 number, since 2×5204151521² = 54166386107053226882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5204151523) 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, 18719831 + ... + 18720108.

It is an arithmetic number, because the mean of its divisors is an integer number (1310397900).

Almost surely, 2^5204151521 is an apocalyptic number.

It is an amenable number.

5204151521 is a deficient number, since it is larger than the sum of its proper divisors (37440079).

5204151521 is a wasteful number, since it uses less digits than its factorization.

5204151521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37440078.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 5204151521 is about 72139.8053850993. The cubic root of 5204151521 is about 1732.9391405826.

Adding to 5204151521 its reverse (1251514025), we get a palindrome (6455665546).

The spelling of 5204151521 in words is "five billion, two hundred four million, one hundred fifty-one thousand, five hundred twenty-one".