163537 has 4 divisors (see below), whose sum is σ = 178416. Its totient is φ = 148660.

The previous prime is 163517. The next prime is 163543. The reversal of 163537 is 735361.

It is a happy number.

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: 735361 = 11 ⋅66851.

It is a cyclic number.

It is not a de Polignac number, because 163537 - 2⁷ = 163409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163517) 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, 7423 + ... + 7444.

It is an arithmetic number, because the mean of its divisors is an integer number (44604).

2¹⁶³⁵³⁷ is an apocalyptic number.

It is an amenable number.

163537 is a deficient number, since it is larger than the sum of its proper divisors (14879).

163537 is a wasteful number, since it uses less digits than its factorization.

163537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14878.

The product of its digits is 1890, while the sum is 25.

The square root of 163537 is about 404.3970820864. The cubic root of 163537 is about 54.6854775306.

Adding to 163537 its reverse (735361), we get a palindrome (898898).

It can be divided in two parts, 16 and 3537, that added together give a palindrome (3553).

The spelling of 163537 in words is "one hundred sixty-three thousand, five hundred thirty-seven".