55631123 has 4 divisors (see below), whose sum is σ = 58903560. Its totient is φ = 52358688.

The previous prime is 55631111. The next prime is 55631153. The reversal of 55631123 is 32113655.

55631123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55631123 - 2¹² = 55627027 is a prime.

It is a super-2 number, since 2×55631123² = 6189643692482258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55631092 and 55631101.

It is not an unprimeable number, because it can be changed into a prime (55631153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1636193 + ... + 1636226.

It is an arithmetic number, because the mean of its divisors is an integer number (14725890).

Almost surely, 2^55631123 is an apocalyptic number.

55631123 is a deficient number, since it is larger than the sum of its proper divisors (3272437).

55631123 is a wasteful number, since it uses less digits than its factorization.

55631123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3272436.

The product of its digits is 2700, while the sum is 26.

The square root of 55631123 is about 7458.6274206452. The cubic root of 55631123 is about 381.7443420617.

Adding to 55631123 its reverse (32113655), we get a palindrome (87744778).

The spelling of 55631123 in words is "fifty-five million, six hundred thirty-one thousand, one hundred twenty-three".