61373 has 4 divisors (see below), whose sum is σ = 66108. Its totient is φ = 56640.

The previous prime is 61363. The next prime is 61379. The reversal of 61373 is 37316.

61373 is nontrivially palindromic in base 11.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20164 + 41209 = 142^2 + 203^2 .

It is a cyclic number.

It is not a de Polignac number, because 61373 - 2⁴ = 61357 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2348 + ... + 2373.

It is an arithmetic number, because the mean of its divisors is an integer number (16527).

2⁶¹³⁷³ is an apocalyptic number.

It is an amenable number.

61373 is a deficient number, since it is larger than the sum of its proper divisors (4735).

61373 is a wasteful number, since it uses less digits than its factorization.

61373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4734.

The product of its digits is 378, while the sum is 20.

The square root of 61373 is about 247.7357463105. The cubic root of 61373 is about 39.4450445514.

Adding to 61373 its reverse (37316), we get a palindrome (98689).

It can be divided in two parts, 613 and 73, that added together give a palindrome (686).

The spelling of 61373 in words is "sixty-one thousand, three hundred seventy-three".