5257240340 has 48 divisors (see below), whose sum is σ = 12677757120. Its totient is φ = 1811105280.

The previous prime is 5257240333. The next prime is 5257240403. The reversal of 5257240340 is 430427525.

It is a junction number, because it is equal to n+sod(n) for n = 5257240297 and 5257240306.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 624677 + ... + 633036.

It is an arithmetic number, because the mean of its divisors is an integer number (264119940).

Almost surely, 2^5257240340 is an apocalyptic number.

It is an amenable number.

5257240340 is an abundant number, since it is smaller than the sum of its proper divisors (7420516780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5257240340 is a wasteful number, since it uses less digits than its factorization.

5257240340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257752 (or 1257750 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 32.

The square root of 5257240340 is about 72506.8296093547. The cubic root of 5257240340 is about 1738.8119273308.

Adding to 5257240340 its reverse (430427525), we get a palindrome (5687667865).

The spelling of 5257240340 in words is "five billion, two hundred fifty-seven million, two hundred forty thousand, three hundred forty".