55523423 has 4 divisors (see below), whose sum is σ = 55643808. Its totient is φ = 55403040.

The previous prime is 55523407. The next prime is 55523443. The reversal of 55523423 is 32432555.

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 55523423 - 2⁴ = 55523407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55523443) 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, 59498 + ... + 60423.

It is an arithmetic number, because the mean of its divisors is an integer number (13910952).

Almost surely, 2^55523423 is an apocalyptic number.

55523423 is a deficient number, since it is larger than the sum of its proper divisors (120385).

55523423 is a wasteful number, since it uses less digits than its factorization.

55523423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120384.

The product of its digits is 18000, while the sum is 29.

The square root of 55523423 is about 7451.4040958735. The cubic root of 55523423 is about 381.4978348089.

Adding to 55523423 its reverse (32432555), we get a palindrome (87955978).

The spelling of 55523423 in words is "fifty-five million, five hundred twenty-three thousand, four hundred twenty-three".