2153720233 has 8 divisors (see below), whose sum is σ = 2469797568. Its totient is φ = 1839743664.

The previous prime is 2153720227. The next prime is 2153720237. The reversal of 2153720233 is 3320273512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2153720233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2153720237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522991 + ... + 527092.

It is an arithmetic number, because the mean of its divisors is an integer number (308724696).

Almost surely, 2^2153720233 is an apocalyptic number.

It is an amenable number.

2153720233 is a deficient number, since it is larger than the sum of its proper divisors (316077335).

2153720233 is a wasteful number, since it uses less digits than its factorization.

2153720233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050383.

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 2153720233 is about 46408.1914428908. The cubic root of 2153720233 is about 1291.4068806509.

Adding to 2153720233 its reverse (3320273512), we get a palindrome (5473993745).

The spelling of 2153720233 in words is "two billion, one hundred fifty-three million, seven hundred twenty thousand, two hundred thirty-three".