4661543 has 2 divisors, whose sum is σ = 4661544. Its totient is φ = 4661542.

The previous prime is 4661539. The next prime is 4661551. The reversal of 4661543 is 3451664.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4661543 - 2² = 4661539 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4661513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2330771 + 2330772.

It is an arithmetic number, because the mean of its divisors is an integer number (2330772).

Almost surely, 2^4661543 is an apocalyptic number.

4661543 is a deficient number, since it is larger than the sum of its proper divisors (1).

4661543 is an equidigital number, since it uses as much as digits as its factorization.

4661543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 29.

The square root of 4661543 is about 2159.0606753864. The cubic root of 4661543 is about 167.0487505134.

The spelling of 4661543 in words is "four million, six hundred sixty-one thousand, five hundred forty-three".