5243251531 has 4 divisors (see below), whose sum is σ = 5992287472. Its totient is φ = 4494215592.

The previous prime is 5243251529. The next prime is 5243251553. The reversal of 5243251531 is 1351523425.

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 5243251531 - 2¹ = 5243251529 is a prime.

It is a super-2 number, since 2×5243251531² = 54983373234667687922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5243251493 and 5243251502.

It is not an unprimeable number, because it can be changed into a prime (5243251501) 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, 374517960 + ... + 374517973.

It is an arithmetic number, because the mean of its divisors is an integer number (1498071868).

Almost surely, 2^5243251531 is an apocalyptic number.

5243251531 is a deficient number, since it is larger than the sum of its proper divisors (749035941).

5243251531 is an equidigital number, since it uses as much as digits as its factorization.

5243251531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749035940.

The product of its digits is 18000, while the sum is 31.

The square root of 5243251531 is about 72410.2998958021. The cubic root of 5243251531 is about 1737.2683092265.

Adding to 5243251531 its reverse (1351523425), we get a palindrome (6594774956).

The spelling of 5243251531 in words is "five billion, two hundred forty-three million, two hundred fifty-one thousand, five hundred thirty-one".