55503023 has 4 divisors (see below), whose sum is σ = 55733568. Its totient is φ = 55272480.

The previous prime is 55502987. The next prime is 55503037. The reversal of 55503023 is 32030555.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32030555 = 5 ⋅6406111.

It is a cyclic number.

It is not a de Polignac number, because 55503023 - 2¹⁸ = 55240879 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55503023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55503083) 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, 114911 + ... + 115392.

It is an arithmetic number, because the mean of its divisors is an integer number (13933392).

Almost surely, 2^55503023 is an apocalyptic number.

55503023 is a deficient number, since it is larger than the sum of its proper divisors (230545).

55503023 is a wasteful number, since it uses less digits than its factorization.

55503023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230544.

The product of its (nonzero) digits is 2250, while the sum is 23.

The square root of 55503023 is about 7450.0351005885. The cubic root of 55503023 is about 381.4511067270.

Adding to 55503023 its reverse (32030555), we get a palindrome (87533578).

The spelling of 55503023 in words is "fifty-five million, five hundred three thousand, twenty-three".