5211020342523 has 4 divisors (see below), whose sum is σ = 6948027123368. Its totient is φ = 3474013561680.

The previous prime is 5211020342519. The next prime is 5211020342603. The reversal of 5211020342523 is 3252430201125.

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

It is not a de Polignac number, because 5211020342523 - 2² = 5211020342519 is a prime.

It is a super-3 number, since 3×5211020342523³ (a number of 39 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5211020342513) 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, 868503390418 + ... + 868503390423.

It is an arithmetic number, because the mean of its divisors is an integer number (1737006780842).

Almost surely, 2^{5211020342523} is an apocalyptic number.

5211020342523 is a deficient number, since it is larger than the sum of its proper divisors (1737006780845).

5211020342523 is a wasteful number, since it uses less digits than its factorization.

5211020342523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1737006780844.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 5211020342523 its reverse (3252430201125), we get a palindrome (8463450543648).

The spelling of 5211020342523 in words is "five trillion, two hundred eleven billion, twenty million, three hundred forty-two thousand, five hundred twenty-three".