143557133 has 2 divisors, whose sum is σ = 143557134. Its totient is φ = 143557132.

The previous prime is 143557109. The next prime is 143557147. The reversal of 143557133 is 331755341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136936804 + 6620329 = 11702^2 + 2573^2 .

It is an emirp because it is prime and its reverse (331755341) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143557133 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 143557133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143557153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71778566 + 71778567.

It is an arithmetic number, because the mean of its divisors is an integer number (71778567).

Almost surely, 2^143557133 is an apocalyptic number.

It is an amenable number.

143557133 is a deficient number, since it is larger than the sum of its proper divisors (1).

143557133 is an equidigital number, since it uses as much as digits as its factorization.

143557133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 32.

The square root of 143557133 is about 11981.5329987444. The cubic root of 143557133 is about 523.6103937714.

The spelling of 143557133 in words is "one hundred forty-three million, five hundred fifty-seven thousand, one hundred thirty-three".