7287490517 has 4 divisors (see below), whose sum is σ = 7287715500. Its totient is φ = 7287265536.

The previous prime is 7287490393. The next prime is 7287490519. The reversal of 7287490517 is 7150947827.

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 2520140401 + 4767350116 = 50201^2 + 69046^2 .

It is a cyclic number.

It is not a de Polignac number, because 7287490517 - 2¹⁰ = 7287489493 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 (7287490519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53642 + ... + 132107.

It is an arithmetic number, because the mean of its divisors is an integer number (1821928875).

Almost surely, 2^7287490517 is an apocalyptic number.

It is an amenable number.

7287490517 is a deficient number, since it is larger than the sum of its proper divisors (224983).

7287490517 is a wasteful number, since it uses less digits than its factorization.

7287490517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224982.

The product of its (nonzero) digits is 987840, while the sum is 50.

The square root of 7287490517 is about 85366.7998521674. The cubic root of 7287490517 is about 1938.7687050731.

The spelling of 7287490517 in words is "seven billion, two hundred eighty-seven million, four hundred ninety thousand, five hundred seventeen".