2159553841 has 3 divisors (see below), whose sum is σ = 2159600313. Its totient is φ = 2159507370.

The previous prime is 2159553839. The next prime is 2159553871. The reversal of 2159553841 is 1483559512.

The square root of 2159553841 is 46471.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 2159553841 - 2¹ = 2159553839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2159553871) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 23236 + ... + 69706.

It is an arithmetic number, because the mean of its divisors is an integer number (719866771).

Almost surely, 2^2159553841 is an apocalyptic number.

2159553841 is the 46471-st square number.

2159553841 is the 23236-th centered octagonal number.

It is an amenable number.

2159553841 is a deficient number, since it is larger than the sum of its proper divisors (46472).

2159553841 is an frugal number, since it uses more digits than its factorization.

2159553841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92942 (or 46471 counting only the distinct ones).

The product of its digits is 216000, while the sum is 43.

The cubic root of 2159553841 is about 1292.5718059991.

The spelling of 2159553841 in words is "two billion, one hundred fifty-nine million, five hundred fifty-three thousand, eight hundred forty-one".