55613 has 4 divisors (see below), whose sum is σ = 58560. Its totient is φ = 52668.
The previous prime is 55609. The next prime is 55619. The reversal of 55613 is 31655.
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 not a de Polignac number, because 55613 - 22 = 55609 is a prime.
It is a Duffinian number.
It is a Curzon number.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 55613.
It is not an unprimeable number, because it can be changed into a prime (55619) 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, 1445 + ... + 1482.
It is an arithmetic number, because the mean of its divisors is an integer number (14640).
255613 is an apocalyptic number.
It is an amenable number.
55613 is a deficient number, since it is larger than the sum of its proper divisors (2947).
55613 is a wasteful number, since it uses less digits than its factorization.
55613 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2946.
The product of its digits is 450, while the sum is 20.
The square root of 55613 is about 235.8240869801. The cubic root of 55613 is about 38.1702883829.
The spelling of 55613 in words is "fifty-five thousand, six hundred thirteen".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.064 sec. • engine limits •