126551559 has 16 divisors (see below), whose sum is σ = 171636192. Its totient is φ = 82925568.

The previous prime is 126551539. The next prime is 126551567. The reversal of 126551559 is 955155621.

It is not a de Polignac number, because 126551559 - 2⁸ = 126551303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126551539) 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, 76489 + ... + 78125.

It is an arithmetic number, because the mean of its divisors is an integer number (10727262).

Almost surely, 2^126551559 is an apocalyptic number.

126551559 is a deficient number, since it is larger than the sum of its proper divisors (45084633).

126551559 is a wasteful number, since it uses less digits than its factorization.

126551559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2066.

The product of its digits is 67500, while the sum is 39.

The square root of 126551559 is about 11249.5137228238. The cubic root of 126551559 is about 502.0602444590.

The spelling of 126551559 in words is "one hundred twenty-six million, five hundred fifty-one thousand, five hundred fifty-nine".