126543653 has 2 divisors, whose sum is σ = 126543654. Its totient is φ = 126543652.

The previous prime is 126543619. The next prime is 126543661. The reversal of 126543653 is 356345621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96491329 + 30052324 = 9823^2 + 5482^2 .

It is a cyclic number.

It is not a de Polignac number, because 126543653 - 2¹⁰ = 126542629 is a prime.

It is a super-2 number, since 2×126543653² = 32026592229168818, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126543673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63271826 + 63271827.

It is an arithmetic number, because the mean of its divisors is an integer number (63271827).

Almost surely, 2^126543653 is an apocalyptic number.

It is an amenable number.

126543653 is a deficient number, since it is larger than the sum of its proper divisors (1).

126543653 is an equidigital number, since it uses as much as digits as its factorization.

126543653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 35.

The square root of 126543653 is about 11249.1623243689. The cubic root of 126543653 is about 502.0497892448.

The spelling of 126543653 in words is "one hundred twenty-six million, five hundred forty-three thousand, six hundred fifty-three".