20143355 has 8 divisors (see below), whose sum is σ = 24825552. Its totient is φ = 15679008.

The previous prime is 20143337. The next prime is 20143379. The reversal of 20143355 is 55334102.

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 20143355 - 2⁸ = 20143099 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 20143355.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54257 + ... + 54626.

It is an arithmetic number, because the mean of its divisors is an integer number (3103194).

Almost surely, 2^20143355 is an apocalyptic number.

20143355 is a deficient number, since it is larger than the sum of its proper divisors (4682197).

20143355 is a wasteful number, since it uses less digits than its factorization.

20143355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108925.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 20143355 is about 4488.1349133020. The cubic root of 20143355 is about 272.0887605000.

Adding to 20143355 its reverse (55334102), we get a palindrome (75477457).

The spelling of 20143355 in words is "twenty million, one hundred forty-three thousand, three hundred fifty-five".