55520423 has 8 divisors (see below), whose sum is σ = 63520800. Its totient is φ = 47537280.

The previous prime is 55520401. The next prime is 55520441. The reversal of 55520423 is 32402555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55520423 - 2⁸ = 55520167 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55520392 and 55520401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55520323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3563 + ... + 11123.

It is an arithmetic number, because the mean of its divisors is an integer number (7940100).

Almost surely, 2^55520423 is an apocalyptic number.

55520423 is a deficient number, since it is larger than the sum of its proper divisors (8000377).

55520423 is a wasteful number, since it uses less digits than its factorization.

55520423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8617.

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 55520423 is about 7451.2027888120. The cubic root of 55520423 is about 381.4909637500.

Adding to 55520423 its reverse (32402555), we get a palindrome (87922978).

The spelling of 55520423 in words is "fifty-five million, five hundred twenty thousand, four hundred twenty-three".