355661143 has 4 divisors (see below), whose sum is σ = 355773600. Its totient is φ = 355548688.

The previous prime is 355661113. The next prime is 355661153. The reversal of 355661143 is 341166553.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 355661143 - 2²⁵ = 322106711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 355661099 and 355661108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355661113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51343 + ... + 57856.

It is an arithmetic number, because the mean of its divisors is an integer number (88943400).

Almost surely, 2^355661143 is an apocalyptic number.

355661143 is a deficient number, since it is larger than the sum of its proper divisors (112457).

355661143 is a wasteful number, since it uses less digits than its factorization.

355661143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112456.

The product of its digits is 32400, while the sum is 34.

The square root of 355661143 is about 18858.9804337350. The cubic root of 355661143 is about 708.5091663078.

The spelling of 355661143 in words is "three hundred fifty-five million, six hundred sixty-one thousand, one hundred forty-three".