5219623521 has 18 divisors (see below), whose sum is σ = 8770388562. Its totient is φ = 2982641760.

The previous prime is 5219623511. The next prime is 5219623523. The reversal of 5219623521 is 1253269125.

It is a happy number.

5219623521 is a `hidden beast` number, since 5 + 2 + 1 + 9 + 623 + 5 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4993542225 + 226081296 = 70665^2 + 15036^2 .

It is not a de Polignac number, because 5219623521 - 2⁷ = 5219623393 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5219623523) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5917500 + ... + 5918381.

It is an arithmetic number, because the mean of its divisors is an integer number (487243809).

Almost surely, 2^5219623521 is an apocalyptic number.

It is an amenable number.

5219623521 is a deficient number, since it is larger than the sum of its proper divisors (3550765041).

5219623521 is a wasteful number, since it uses less digits than its factorization.

5219623521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11835901 (or 11835891 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 5219623521 is about 72246.9620191742. The cubic root of 5219623521 is about 1734.6547905626.

The spelling of 5219623521 in words is "five billion, two hundred nineteen million, six hundred twenty-three thousand, five hundred twenty-one".