126304553 has 2 divisors, whose sum is σ = 126304554. Its totient is φ = 126304552.

The previous prime is 126304537. The next prime is 126304561. The reversal of 126304553 is 355403621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90687529 + 35617024 = 9523^2 + 5968^2 .

It is a cyclic number.

It is not a de Polignac number, because 126304553 - 2⁴ = 126304537 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (126304583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63152276 + 63152277.

It is an arithmetic number, because the mean of its divisors is an integer number (63152277).

Almost surely, 2^126304553 is an apocalyptic number.

It is an amenable number.

126304553 is a deficient number, since it is larger than the sum of its proper divisors (1).

126304553 is an equidigital number, since it uses as much as digits as its factorization.

126304553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 126304553 is about 11238.5298415763. The cubic root of 126304553 is about 501.7333877893.

The spelling of 126304553 in words is "one hundred twenty-six million, three hundred four thousand, five hundred fifty-three".