538465 has 4 divisors (see below), whose sum is σ = 646164. Its totient is φ = 430768.

The previous prime is 538457. The next prime is 538471. The reversal of 538465 is 564835.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 564835 = 5 ⋅112967.

It can be written as a sum of positive squares in 2 ways, for example, as 345744 + 192721 = 588^2 + 439^2 .

It is a cyclic number.

It is not a de Polignac number, because 538465 - 2³ = 538457 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 5⁵ + 3¹² + 4⁴ + 8³ + 6 + 5⁵ .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53842 + ... + 53851.

It is an arithmetic number, because the mean of its divisors is an integer number (161541).

2⁵³⁸⁴⁶⁵ is an apocalyptic number.

It is an amenable number.

538465 is a deficient number, since it is larger than the sum of its proper divisors (107699).

538465 is a wasteful number, since it uses less digits than its factorization.

538465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107698.

The product of its digits is 14400, while the sum is 31.

The square root of 538465 is about 733.8017443424. The cubic root of 538465 is about 81.3552954367.

The spelling of 538465 in words is "five hundred thirty-eight thousand, four hundred sixty-five".