126500055 has 24 divisors (see below), whose sum is σ = 222476016. Its totient is φ = 61332480.

The previous prime is 126500053. The next prime is 126500089. The reversal of 126500055 is 550005621.

It is not a de Polignac number, because 126500055 - 2¹ = 126500053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126499998 and 126500034.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126500053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33034 + ... + 36663.

It is an arithmetic number, because the mean of its divisors is an integer number (9269834).

Almost surely, 2^126500055 is an apocalyptic number.

126500055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

126500055 is a deficient number, since it is larger than the sum of its proper divisors (95975961).

126500055 is a wasteful number, since it uses less digits than its factorization.

126500055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69727 (or 69716 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 126500055 is about 11247.2243242500. The cubic root of 126500055 is about 501.9921256628.

Adding to 126500055 its reverse (550005621), we get a palindrome (676505676).

The spelling of 126500055 in words is "one hundred twenty-six million, five hundred thousand, fifty-five".