126530550 has 72 divisors (see below), whose sum is σ = 341402256. Its totient is φ = 33597120.

The previous prime is 126530527. The next prime is 126530611. The reversal of 126530550 is 55035621.

126530550 is a `hidden beast` number, since 1 + 2 + 653 + 0 + 5 + 5 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 142207 + ... + 143093.

It is an arithmetic number, because the mean of its divisors is an integer number (4741698).

Almost surely, 2^126530550 is an apocalyptic number.

126530550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 126530550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170701128).

126530550 is an abundant number, since it is smaller than the sum of its proper divisors (214871706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126530550 is a wasteful number, since it uses less digits than its factorization.

126530550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222 (or 1214 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 126530550 is about 11248.5799103709. The cubic root of 126530550 is about 502.0324603487.

The spelling of 126530550 in words is "one hundred twenty-six million, five hundred thirty thousand, five hundred fifty".