61383 has 16 divisors (see below), whose sum is σ = 97280. Its totient is φ = 33696.

The previous prime is 61381. The next prime is 61403. The reversal of 61383 is 38316.

It is not a de Polignac number, because 61383 - 2¹ = 61381 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

61383 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 738 + ... + 816.

It is an arithmetic number, because the mean of its divisors is an integer number (6080).

2⁶¹³⁸³ is an apocalyptic number.

61383 is a deficient number, since it is larger than the sum of its proper divisors (35897).

61383 is a wasteful number, since it uses less digits than its factorization.

61383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126.

The product of its digits is 432, while the sum is 21.

The square root of 61383 is about 247.7559282843. The cubic root of 61383 is about 39.4471868019.

Adding to 61383 its reverse (38316), we get a palindrome (99699).

It can be divided in two parts, 613 and 83, that added together give a palindrome (696).

The spelling of 61383 in words is "sixty-one thousand, three hundred eighty-three".