5211504523 has 4 divisors (see below), whose sum is σ = 5249544840. Its totient is φ = 5173464208.

The previous prime is 5211504499. The next prime is 5211504527. The reversal of 5211504523 is 3254051125.

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

It is a cyclic number.

It is not a de Polignac number, because 5211504523 - 2⁵ = 5211504491 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5211504491 and 5211504500.

It is not an unprimeable number, because it can be changed into a prime (5211504527) 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, 19019953 + ... + 19020226.

It is an arithmetic number, because the mean of its divisors is an integer number (1312386210).

Almost surely, 2^5211504523 is an apocalyptic number.

5211504523 is a deficient number, since it is larger than the sum of its proper divisors (38040317).

5211504523 is a wasteful number, since it uses less digits than its factorization.

5211504523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38040316.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 5211504523 is about 72190.7509519052. The cubic root of 5211504523 is about 1733.7549193171.

Adding to 5211504523 its reverse (3254051125), we get a palindrome (8465555648).

The spelling of 5211504523 in words is "five billion, two hundred eleven million, five hundred four thousand, five hundred twenty-three".