143781055 has 16 divisors (see below), whose sum is σ = 192816288. Its totient is φ = 102016000.

The previous prime is 143781049. The next prime is 143781061. The reversal of 143781055 is 550187341.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (143781049) and next prime (143781061).

It is not a de Polignac number, because 143781055 - 2³ = 143781047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 143781055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29626 + ... + 34135.

It is an arithmetic number, because the mean of its divisors is an integer number (12051018).

Almost surely, 2^143781055 is an apocalyptic number.

143781055 is a deficient number, since it is larger than the sum of its proper divisors (49035233).

143781055 is a wasteful number, since it uses less digits than its factorization.

143781055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63818.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 143781055 is about 11990.8738213693. The cubic root of 143781055 is about 523.8824967671.

The spelling of 143781055 in words is "one hundred forty-three million, seven hundred eighty-one thousand, fifty-five".