55563123 has 32 divisors (see below), whose sum is σ = 97804800. Its totient is φ = 27164160.

The previous prime is 55563121. The next prime is 55563127. The reversal of 55563123 is 32136555.

It is not a de Polignac number, because 55563123 - 2¹ = 55563121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55563121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3148 + ... + 11001.

It is an arithmetic number, because the mean of its divisors is an integer number (3056400).

Almost surely, 2^55563123 is an apocalyptic number.

55563123 is a deficient number, since it is larger than the sum of its proper divisors (42241677).

55563123 is a wasteful number, since it uses less digits than its factorization.

55563123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14187.

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

The square root of 55563123 is about 7454.0675473194. The cubic root of 55563123 is about 381.5887385207.

Adding to 55563123 its reverse (32136555), we get a palindrome (87699678).

The spelling of 55563123 in words is "fifty-five million, five hundred sixty-three thousand, one hundred twenty-three".