538315557 has 32 divisors (see below), whose sum is σ = 826640640. Its totient is φ = 308659200.

The previous prime is 538315517. The next prime is 538315571. The reversal of 538315557 is 755513835.

It is not a de Polignac number, because 538315557 - 2¹⁰ = 538314533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538315517) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62944 + ... + 70982.

It is an arithmetic number, because the mean of its divisors is an integer number (25832520).

Almost surely, 2^538315557 is an apocalyptic number.

It is an amenable number.

538315557 is a deficient number, since it is larger than the sum of its proper divisors (288325083).

538315557 is a wasteful number, since it uses less digits than its factorization.

538315557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8173.

The product of its digits is 315000, while the sum is 42.

The square root of 538315557 is about 23201.6283264774. The cubic root of 538315557 is about 813.4776842054.

The spelling of 538315557 in words is "five hundred thirty-eight million, three hundred fifteen thousand, five hundred fifty-seven".