506115557 has 4 divisors (see below), whose sum is σ = 507002496. Its totient is φ = 505228620.

The previous prime is 506115553. The next prime is 506115581. The reversal of 506115557 is 755511605.

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 506115557 - 2² = 506115553 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 (506115553) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 442613 + ... + 443754.

It is an arithmetic number, because the mean of its divisors is an integer number (126750624).

Almost surely, 2^506115557 is an apocalyptic number.

It is an amenable number.

506115557 is a deficient number, since it is larger than the sum of its proper divisors (886939).

506115557 is an equidigital number, since it uses as much as digits as its factorization.

506115557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886938.

The product of its (nonzero) digits is 26250, while the sum is 35.

The square root of 506115557 is about 22497.0121793984. The cubic root of 506115557 is about 796.9233690327.

The spelling of 506115557 in words is "five hundred six million, one hundred fifteen thousand, five hundred fifty-seven".