263552543 has 2 divisors, whose sum is σ = 263552544. Its totient is φ = 263552542.

The previous prime is 263552537. The next prime is 263552579. The reversal of 263552543 is 345255362.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 263552543 - 2¹⁸ = 263290399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263552503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131776271 + 131776272.

It is an arithmetic number, because the mean of its divisors is an integer number (131776272).

Almost surely, 2^263552543 is an apocalyptic number.

263552543 is a deficient number, since it is larger than the sum of its proper divisors (1).

263552543 is an equidigital number, since it uses as much as digits as its factorization.

263552543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108000, while the sum is 35.

The square root of 263552543 is about 16234.3014324608. The cubic root of 263552543 is about 641.1442282925.

The spelling of 263552543 in words is "two hundred sixty-three million, five hundred fifty-two thousand, five hundred forty-three".