2154520343 has 4 divisors (see below), whose sum is σ = 2155426848. Its totient is φ = 2153613840.

The previous prime is 2154520337. The next prime is 2154520351. The reversal of 2154520343 is 3430254512.

It is a happy number.

2154520343 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2154520343 - 2⁸ = 2154520087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154520363) 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, 449678 + ... + 454443.

It is an arithmetic number, because the mean of its divisors is an integer number (538856712).

Almost surely, 2^2154520343 is an apocalyptic number.

2154520343 is a deficient number, since it is larger than the sum of its proper divisors (906505).

2154520343 is an equidigital number, since it uses as much as digits as its factorization.

2154520343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906504.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 2154520343 is about 46416.8109955865. The cubic root of 2154520343 is about 1291.5667806565.

Adding to 2154520343 its reverse (3430254512), we get a palindrome (5584774855).

The spelling of 2154520343 in words is "two billion, one hundred fifty-four million, five hundred twenty thousand, three hundred forty-three".