61600143 has 16 divisors (see below), whose sum is σ = 89807616. Its totient is φ = 37247040.

The previous prime is 61600139. The next prime is 61600159. The reversal of 61600143 is 34100616.

It is not a de Polignac number, because 61600143 - 2² = 61600139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61602143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14155 + ... + 17987.

It is an arithmetic number, because the mean of its divisors is an integer number (5612976).

Almost surely, 2^61600143 is an apocalyptic number.

61600143 is a deficient number, since it is larger than the sum of its proper divisors (28207473).

61600143 is a wasteful number, since it uses less digits than its factorization.

61600143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4334.

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

The square root of 61600143 is about 7848.5758580777. The cubic root of 61600143 is about 394.9364700476.

Adding to 61600143 its reverse (34100616), we get a palindrome (95700759).

The spelling of 61600143 in words is "sixty-one million, six hundred thousand, one hundred forty-three".