538217263 has 4 divisors (see below), whose sum is σ = 569877120. Its totient is φ = 506557408.

The previous prime is 538217249. The next prime is 538217311. The reversal of 538217263 is 362712835.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 362712835 = 5 ⋅72542567.

It is a cyclic number.

It is not a de Polignac number, because 538217263 - 2⁹ = 538216751 is a prime.

It is a super-2 number, since 2×538217263² = 579355644382422338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538217203) 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, 15829903 + ... + 15829936.

It is an arithmetic number, because the mean of its divisors is an integer number (142469280).

Almost surely, 2^538217263 is an apocalyptic number.

538217263 is a deficient number, since it is larger than the sum of its proper divisors (31659857).

538217263 is a wasteful number, since it uses less digits than its factorization.

538217263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31659856.

The product of its digits is 60480, while the sum is 37.

The square root of 538217263 is about 23199.5099732731. The cubic root of 538217263 is about 813.4281687358.

The spelling of 538217263 in words is "five hundred thirty-eight million, two hundred seventeen thousand, two hundred sixty-three".