5257487730 has 64 divisors (see below), whose sum is σ = 13776749568. Its totient is φ = 1273460160.

The previous prime is 5257487689. The next prime is 5257487743. The reversal of 5257487730 is 377847525.

It is a super-2 number, since 2×5257487730² = 55282354462201105800, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5257487730.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 423877 + ... + 436103.

It is an arithmetic number, because the mean of its divisors is an integer number (215261712).

Almost surely, 2^5257487730 is an apocalyptic number.

5257487730 is an abundant number, since it is smaller than the sum of its proper divisors (8519261838).

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

5257487730 is a wasteful number, since it uses less digits than its factorization.

5257487730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13551.

The product of its (nonzero) digits is 1646400, while the sum is 48.

The square root of 5257487730 is about 72508.5355665111. The cubic root of 5257487730 is about 1738.8392013318.

The spelling of 5257487730 in words is "five billion, two hundred fifty-seven million, four hundred eighty-seven thousand, seven hundred thirty".