61446143 has 8 divisors (see below), whose sum is σ = 70975440. Its totient is φ = 52574080.

The previous prime is 61446139. The next prime is 61446163. The reversal of 61446143 is 34164416.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61446143 - 2² = 61446139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61446113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164108 + ... + 164481.

It is an arithmetic number, because the mean of its divisors is an integer number (8871930).

Almost surely, 2^61446143 is an apocalyptic number.

61446143 is a deficient number, since it is larger than the sum of its proper divisors (9529297).

61446143 is a wasteful number, since it uses less digits than its factorization.

61446143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328617.

The product of its digits is 6912, while the sum is 29.

The square root of 61446143 is about 7838.7590216819. The cubic root of 61446143 is about 394.6070824449.

The spelling of 61446143 in words is "sixty-one million, four hundred forty-six thousand, one hundred forty-three".