126550251 has 12 divisors (see below), whose sum is σ = 183053728. Its totient is φ = 84247344.

The previous prime is 126550211. The next prime is 126550267. The reversal of 126550251 is 152055621.

126550251 is a `hidden beast` number, since 1 + 2 + 655 + 0 + 2 + 5 + 1 = 666.

It is not a de Polignac number, because 126550251 - 2¹¹ = 126548203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126550211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2995 + ... + 16188.

Almost surely, 2^126550251 is an apocalyptic number.

126550251 is a deficient number, since it is larger than the sum of its proper divisors (56503477).

126550251 is a wasteful number, since it uses less digits than its factorization.

126550251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19922 (or 19919 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 126550251 is about 11249.4555868273. The cubic root of 126550251 is about 502.0585147369.

The spelling of 126550251 in words is "one hundred twenty-six million, five hundred fifty thousand, two hundred fifty-one".