2153217043 has 4 divisors (see below), whose sum is σ = 2153768728. Its totient is φ = 2152665360.

The previous prime is 2153217023. The next prime is 2153217083. The reversal of 2153217043 is 3407123512.

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 2153217043 - 2¹³ = 2153208851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2153217023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269946 + ... + 277807.

It is an arithmetic number, because the mean of its divisors is an integer number (538442182).

Almost surely, 2^2153217043 is an apocalyptic number.

2153217043 is a deficient number, since it is larger than the sum of its proper divisors (551685).

2153217043 is an equidigital number, since it uses as much as digits as its factorization.

2153217043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551684.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 2153217043 is about 46402.7697772450. The cubic root of 2153217043 is about 1291.3062990878.

The spelling of 2153217043 in words is "two billion, one hundred fifty-three million, two hundred seventeen thousand, forty-three".