55136523 has 16 divisors (see below), whose sum is σ = 79492896. Its totient is φ = 33792000.

The previous prime is 55136519. The next prime is 55136533. The reversal of 55136523 is 32563155.

It is not a de Polignac number, because 55136523 - 2² = 55136519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55136533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7273 + ... + 12773.

It is an arithmetic number, because the mean of its divisors is an integer number (4968306).

Almost surely, 2^55136523 is an apocalyptic number.

55136523 is a deficient number, since it is larger than the sum of its proper divisors (24356373).

55136523 is a wasteful number, since it uses less digits than its factorization.

55136523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5774.

The product of its digits is 13500, while the sum is 30.

The square root of 55136523 is about 7425.3971610952. The cubic root of 55136523 is about 380.6096469766.

Adding to 55136523 its reverse (32563155), we get a palindrome (87699678).

The spelling of 55136523 in words is "fifty-five million, one hundred thirty-six thousand, five hundred twenty-three".