538557 has 4 divisors (see below), whose sum is σ = 718080. Its totient is φ = 359036.

The previous prime is 538553. The next prime is 538561. The reversal of 538557 is 755835.

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 an interprime number because it is at equal distance from previous prime (538553) and next prime (538561).

It is a cyclic number.

It is not a de Polignac number, because 538557 - 2² = 538553 is a prime.

It is a D-number.

538557 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538553) 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, 89757 + ... + 89762.

It is an arithmetic number, because the mean of its divisors is an integer number (179520).

2⁵³⁸⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

538557 is a deficient number, since it is larger than the sum of its proper divisors (179523).

538557 is a wasteful number, since it uses less digits than its factorization.

538557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179522.

The product of its digits is 21000, while the sum is 33.

The square root of 538557 is about 733.8644288968. The cubic root of 538557 is about 81.3599285209.

The spelling of 538557 in words is "five hundred thirty-eight thousand, five hundred fifty-seven".