2153331553 has 4 divisors (see below), whose sum is σ = 2246954688. Its totient is φ = 2059708420.

The previous prime is 2153331533. The next prime is 2153331563. The reversal of 2153331553 is 3551333512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-2153331553 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2153331533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46811533 + ... + 46811578.

It is an arithmetic number, because the mean of its divisors is an integer number (561738672).

Almost surely, 2^2153331553 is an apocalyptic number.

2153331553 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2153331553 is a deficient number, since it is larger than the sum of its proper divisors (93623135).

2153331553 is an equidigital number, since it uses as much as digits as its factorization.

2153331553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93623134.

The product of its digits is 20250, while the sum is 31.

The square root of 2153331553 is about 46404.0036311523. The cubic root of 2153331553 is about 1291.3291896217.

The spelling of 2153331553 in words is "two billion, one hundred fifty-three million, three hundred thirty-one thousand, five hundred fifty-three".