2153454531 has 4 divisors (see below), whose sum is σ = 2871272712. Its totient is φ = 1435636352.

The previous prime is 2153454517. The next prime is 2153454551. The reversal of 2153454531 is 1354543512.

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 2153454531 - 2⁷ = 2153454403 is a prime.

It is a super-3 number, since 3×2153454531³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 2153454492 and 2153454501.

It is not an unprimeable number, because it can be changed into a prime (2153454551) 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, 358909086 + ... + 358909091.

It is an arithmetic number, because the mean of its divisors is an integer number (717818178).

Almost surely, 2^2153454531 is an apocalyptic number.

2153454531 is a deficient number, since it is larger than the sum of its proper divisors (717818181).

2153454531 is an equidigital number, since it uses as much as digits as its factorization.

2153454531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717818180.

The product of its digits is 36000, while the sum is 33.

The square root of 2153454531 is about 46405.3286918647. The cubic root of 2153454531 is about 1291.3537720039.

The spelling of 2153454531 in words is "two billion, one hundred fifty-three million, four hundred fifty-four thousand, five hundred thirty-one".