143454561 has 32 divisors (see below), whose sum is σ = 203212800. Its totient is φ = 89886720.

The previous prime is 143454559. The next prime is 143454581. The reversal of 143454561 is 165454341.

It is not a de Polignac number, because 143454561 - 2¹ = 143454559 is a prime.

It is a super-2 number, since 2×143454561² = 41158422143405442, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (143454581) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 750976 + ... + 751166.

It is an arithmetic number, because the mean of its divisors is an integer number (6350400).

Almost surely, 2^143454561 is an apocalyptic number.

It is an amenable number.

143454561 is a deficient number, since it is larger than the sum of its proper divisors (59758239).

143454561 is a wasteful number, since it uses less digits than its factorization.

143454561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409.

The product of its digits is 28800, while the sum is 33.

The square root of 143454561 is about 11977.2518133335. The cubic root of 143454561 is about 523.4856569954.

The spelling of 143454561 in words is "one hundred forty-three million, four hundred fifty-four thousand, five hundred sixty-one".