126536505 has 16 divisors (see below), whose sum is σ = 203751744. Its totient is φ = 67055040.

The previous prime is 126536503. The next prime is 126536539. The reversal of 126536505 is 505635621.

It is not a de Polignac number, because 126536505 - 2¹ = 126536503 is a prime.

It is a super-2 number, since 2×126536505² = 32022974195230050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (126536503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24511 + ... + 29220.

It is an arithmetic number, because the mean of its divisors is an integer number (12734484).

Almost surely, 2^126536505 is an apocalyptic number.

126536505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126536505 is a deficient number, since it is larger than the sum of its proper divisors (77215239).

126536505 is a wasteful number, since it uses less digits than its factorization.

126536505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53896.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 126536505 is about 11248.8446073363. The cubic root of 126536505 is about 502.0403360657.

The spelling of 126536505 in words is "one hundred twenty-six million, five hundred thirty-six thousand, five hundred five".