538541 has 4 divisors (see below), whose sum is σ = 542784. Its totient is φ = 534300.

The previous prime is 538529. The next prime is 538553. The reversal of 538541 is 145835.

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, and also an emirpimes, since its reverse is a distinct semiprime: 145835 = 5 ⋅29167.

It is an interprime number because it is at equal distance from previous prime (538529) and next prime (538553).

It is a cyclic number.

It is not a de Polignac number, because 538541 - 2¹⁴ = 522157 is a prime.

It is a super-3 number, since 3×538541³ = 468573336472423263, which contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 538541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1925 + ... + 2186.

It is an arithmetic number, because the mean of its divisors is an integer number (135696).

2⁵³⁸⁵⁴¹ is an apocalyptic number.

It is an amenable number.

538541 is a deficient number, since it is larger than the sum of its proper divisors (4243).

538541 is a wasteful number, since it uses less digits than its factorization.

538541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4242.

The product of its digits is 2400, while the sum is 26.

The square root of 538541 is about 733.8535276198. The cubic root of 538541 is about 81.3591228050.

The spelling of 538541 in words is "five hundred thirty-eight thousand, five hundred forty-one".