42553 has 4 divisors (see below), whose sum is σ = 48640. Its totient is φ = 36468.

The previous prime is 42533. The next prime is 42557. The reversal of 42553 is 35524.

It is a happy number.

42553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 42553 - 2¹³ = 34361 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 42553.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42557) 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, 3033 + ... + 3046.

It is an arithmetic number, because the mean of its divisors is an integer number (12160).

2⁴²⁵⁵³ is an apocalyptic number.

It is an amenable number.

42553 is a deficient number, since it is larger than the sum of its proper divisors (6087).

42553 is an equidigital number, since it uses as much as digits as its factorization.

42553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6086.

The product of its digits is 600, while the sum is 19.

The square root of 42553 is about 206.2837851117. The cubic root of 42553 is about 34.9121606869.

It can be divided in two parts, 42 and 553, that added together give a palindrome (595).

The spelling of 42553 in words is "forty-two thousand, five hundred fifty-three".