126625553 has 2 divisors, whose sum is σ = 126625554. Its totient is φ = 126625552.

The previous prime is 126625529. The next prime is 126625559. The reversal of 126625553 is 355526621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101143249 + 25482304 = 10057^2 + 5048^2 .

It is a cyclic number.

It is not a de Polignac number, because 126625553 - 2²² = 122431249 is a prime.

It is not a weakly prime, because it can be changed into another prime (126625559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63312776 + 63312777.

It is an arithmetic number, because the mean of its divisors is an integer number (63312777).

Almost surely, 2^126625553 is an apocalyptic number.

It is an amenable number.

126625553 is a deficient number, since it is larger than the sum of its proper divisors (1).

126625553 is an equidigital number, since it uses as much as digits as its factorization.

126625553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54000, while the sum is 35.

The square root of 126625553 is about 11252.8020066115. The cubic root of 126625553 is about 502.1580760148.

The spelling of 126625553 in words is "one hundred twenty-six million, six hundred twenty-five thousand, five hundred fifty-three".