126011533 has 2 divisors, whose sum is σ = 126011534. Its totient is φ = 126011532.

The previous prime is 126011507. The next prime is 126011569. The reversal of 126011533 is 335110621.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123943689 + 2067844 = 11133^2 + 1438^2 .

It is a cyclic number.

It is not a de Polignac number, because 126011533 - 2²¹ = 123914381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126011593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63005766 + 63005767.

It is an arithmetic number, because the mean of its divisors is an integer number (63005767).

Almost surely, 2^126011533 is an apocalyptic number.

It is an amenable number.

126011533 is a deficient number, since it is larger than the sum of its proper divisors (1).

126011533 is an equidigital number, since it uses as much as digits as its factorization.

126011533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 126011533 is about 11225.4858692174. The cubic root of 126011533 is about 501.3450888936.

The spelling of 126011533 in words is "one hundred twenty-six million, eleven thousand, five hundred thirty-three".