126536553 has 48 divisors (see below), whose sum is σ = 221532480. Its totient is φ = 70761600.

The previous prime is 126536539. The next prime is 126536563. The reversal of 126536553 is 355635621.

126536553 is a `hidden beast` number, since 12 + 65 + 36 + 553 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-126536553 is a prime.

It is a super-2 number, since 2×126536553² = 32022998490243618, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126536503) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48933 + ... + 51453.

It is an arithmetic number, because the mean of its divisors is an integer number (4615260).

Almost surely, 2^126536553 is an apocalyptic number.

126536553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

126536553 is a deficient number, since it is larger than the sum of its proper divisors (94995927).

126536553 is a wasteful number, since it uses less digits than its factorization.

126536553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2567 (or 2548 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

The square root of 126536553 is about 11248.8467408886. The cubic root of 126536553 is about 502.0403995465.

The spelling of 126536553 in words is "one hundred twenty-six million, five hundred thirty-six thousand, five hundred fifty-three".