126551538 has 16 divisors (see below), whose sum is σ = 281225760. Its totient is φ = 42183828.

The previous prime is 126551531. The next prime is 126551539. The reversal of 126551538 is 835155621.

It is a happy number.

126551538 is a `hidden beast` number, since 12 + 65 + 51 + 538 = 666.

It is not an unprimeable number, because it can be changed into a prime (126551531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1171720 + ... + 1171827.

It is an arithmetic number, because the mean of its divisors is an integer number (17576610).

Almost surely, 2^126551538 is an apocalyptic number.

126551538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

126551538 is an abundant number, since it is smaller than the sum of its proper divisors (154674222).

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

126551538 is a wasteful number, since it uses less digits than its factorization.

126551538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2343558 (or 2343552 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 126551538 is about 11249.5127894500. The cubic root of 126551538 is about 502.0602166883.

The spelling of 126551538 in words is "one hundred twenty-six million, five hundred fifty-one thousand, five hundred thirty-eight".