143554661 has 8 divisors (see below), whose sum is σ = 149929920. Its totient is φ = 137190592.

The previous prime is 143554639. The next prime is 143554667. The reversal of 143554661 is 166455341.

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 143554661 - 2¹⁰ = 143553637 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 (143554667) 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 7 ways as a sum of consecutive naturals, for example, 33710 + ... + 37728.

It is an arithmetic number, because the mean of its divisors is an integer number (18741240).

Almost surely, 2^143554661 is an apocalyptic number.

It is an amenable number.

143554661 is a deficient number, since it is larger than the sum of its proper divisors (6375259).

143554661 is a wasteful number, since it uses less digits than its factorization.

143554661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5595.

The product of its digits is 43200, while the sum is 35.

The square root of 143554661 is about 11981.4298395475. The cubic root of 143554661 is about 523.6073882959.

The spelling of 143554661 in words is "one hundred forty-three million, five hundred fifty-four thousand, six hundred sixty-one".