11980543 has 2 divisors, whose sum is σ = 11980544. Its totient is φ = 11980542.

The previous prime is 11980537. The next prime is 11980547. The reversal of 11980543 is 34508911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11980543 - 2⁵ = 11980511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11980547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5990271 + 5990272.

It is an arithmetic number, because the mean of its divisors is an integer number (5990272).

Almost surely, 2^11980543 is an apocalyptic number.

11980543 is a deficient number, since it is larger than the sum of its proper divisors (1).

11980543 is an equidigital number, since it uses as much as digits as its factorization.

11980543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 11980543 is about 3461.2920997801. The cubic root of 11980543 is about 228.8190443237.

The spelling of 11980543 in words is "eleven million, nine hundred eighty thousand, five hundred forty-three".