126388553 has 2 divisors, whose sum is σ = 126388554. Its totient is φ = 126388552.

The previous prime is 126388547. The next prime is 126388573. The reversal of 126388553 is 355883621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79780624 + 46607929 = 8932^2 + 6827^2 .

It is a cyclic number.

It is not a de Polignac number, because 126388553 - 2¹⁶ = 126323017 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126388553.

It is not a weakly prime, because it can be changed into another prime (126388543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63194276 + 63194277.

It is an arithmetic number, because the mean of its divisors is an integer number (63194277).

Almost surely, 2^126388553 is an apocalyptic number.

It is an amenable number.

126388553 is a deficient number, since it is larger than the sum of its proper divisors (1).

126388553 is an equidigital number, since it uses as much as digits as its factorization.

126388553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 41.

The square root of 126388553 is about 11242.2663640389. The cubic root of 126388553 is about 501.8445906027.

The spelling of 126388553 in words is "one hundred twenty-six million, three hundred eighty-eight thousand, five hundred fifty-three".