2151002543 has 4 divisors (see below), whose sum is σ = 2151908328. Its totient is φ = 2150096760.

The previous prime is 2151002533. The next prime is 2151002551. The reversal of 2151002543 is 3452001512.

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 2151002543 - 2⁶ = 2151002479 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 (2151002533) 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, 449321 + ... + 454082.

It is an arithmetic number, because the mean of its divisors is an integer number (537977082).

Almost surely, 2^2151002543 is an apocalyptic number.

2151002543 is a deficient number, since it is larger than the sum of its proper divisors (905785).

2151002543 is an equidigital number, since it uses as much as digits as its factorization.

2151002543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905784.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2151002543 is about 46378.9019167121. The cubic root of 2151002543 is about 1290.8634611340.

The spelling of 2151002543 in words is "two billion, one hundred fifty-one million, two thousand, five hundred forty-three".