5240131261 has 4 divisors (see below), whose sum is σ = 5241942972. Its totient is φ = 5238319552.

The previous prime is 5240131241. The next prime is 5240131271. The reversal of 5240131261 is 1621310425.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1858127236 + 3382004025 = 43106^2 + 58155^2 .

It is a cyclic number.

It is not a de Polignac number, because 5240131261 - 2¹⁷ = 5240000189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5240131241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 901510 + ... + 907303.

It is an arithmetic number, because the mean of its divisors is an integer number (1310485743).

Almost surely, 2^5240131261 is an apocalyptic number.

It is an amenable number.

5240131261 is a deficient number, since it is larger than the sum of its proper divisors (1811711).

5240131261 is a wasteful number, since it uses less digits than its factorization.

5240131261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1811710.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 5240131261 is about 72388.7509285801. The cubic root of 5240131261 is about 1736.9236235030.

Adding to 5240131261 its reverse (1621310425), we get a palindrome (6861441686).

The spelling of 5240131261 in words is "five billion, two hundred forty million, one hundred thirty-one thousand, two hundred sixty-one".