55330123 has 4 divisors (see below), whose sum is σ = 55878048. Its totient is φ = 54782200.

The previous prime is 55330103. The next prime is 55330127. The reversal of 55330123 is 32103355.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55330123 is a prime.

It is a super-2 number, since 2×55330123² = 6122845022390258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55330094 and 55330103.

It is not an unprimeable number, because it can be changed into a prime (55330127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273811 + ... + 274012.

It is an arithmetic number, because the mean of its divisors is an integer number (13969512).

Almost surely, 2^55330123 is an apocalyptic number.

55330123 is a deficient number, since it is larger than the sum of its proper divisors (547925).

55330123 is a wasteful number, since it uses less digits than its factorization.

55330123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547924.

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 55330123 is about 7438.4220772957. The cubic root of 55330123 is about 381.0546028020.

Adding to 55330123 its reverse (32103355), we get a palindrome (87433478).

The spelling of 55330123 in words is "fifty-five million, three hundred thirty thousand, one hundred twenty-three".