245213543 has 2 divisors, whose sum is σ = 245213544. Its totient is φ = 245213542.

The previous prime is 245213539. The next prime is 245213569. The reversal of 245213543 is 345312542.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245213543 - 2² = 245213539 is a prime.

It is a super-2 number, since 2×245213543² = 120259363341225698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245210543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122606771 + 122606772.

It is an arithmetic number, because the mean of its divisors is an integer number (122606772).

Almost surely, 2^245213543 is an apocalyptic number.

245213543 is a deficient number, since it is larger than the sum of its proper divisors (1).

245213543 is an equidigital number, since it uses as much as digits as its factorization.

245213543 is an odious number, because the sum of its binary digits is odd.

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

The square root of 245213543 is about 15659.2957376761. The cubic root of 245213543 is about 625.9142187678.

The spelling of 245213543 in words is "two hundred forty-five million, two hundred thirteen thousand, five hundred forty-three".