55153223 has 4 divisors (see below), whose sum is σ = 55199760. Its totient is φ = 55106688.

The previous prime is 55153213. The next prime is 55153229. The reversal of 55153223 is 32235155.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32235155 = 5 ⋅6447031.

It is a cyclic number.

It is not a de Polignac number, because 55153223 - 2⁴ = 55153207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55153192 and 55153201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55153229) 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, 21443 + ... + 23876.

It is an arithmetic number, because the mean of its divisors is an integer number (13799940).

Almost surely, 2^55153223 is an apocalyptic number.

55153223 is a deficient number, since it is larger than the sum of its proper divisors (46537).

55153223 is a wasteful number, since it uses less digits than its factorization.

55153223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46536.

The product of its digits is 4500, while the sum is 26.

The square root of 55153223 is about 7426.5215949326. The cubic root of 55153223 is about 380.6480700226.

Adding to 55153223 its reverse (32235155), we get a palindrome (87388378).

The spelling of 55153223 in words is "fifty-five million, one hundred fifty-three thousand, two hundred twenty-three".