5257638013 has 4 divisors (see below), whose sum is σ = 5258247840. Its totient is φ = 5257028188.

The previous prime is 5257637981. The next prime is 5257638017. The reversal of 5257638013 is 3108367525.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5257638013 - 2⁵ = 5257637981 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 (5257638017) 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, 291793 + ... + 309286.

It is an arithmetic number, because the mean of its divisors is an integer number (1314561960).

Almost surely, 2^5257638013 is an apocalyptic number.

It is an amenable number.

5257638013 is a deficient number, since it is larger than the sum of its proper divisors (609827).

5257638013 is an equidigital number, since it uses as much as digits as its factorization.

5257638013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609826.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 5257638013 is about 72509.5718715812. The cubic root of 5257638013 is about 1738.8557691614.

The spelling of 5257638013 in words is "five billion, two hundred fifty-seven million, six hundred thirty-eight thousand, thirteen".