55512023 has 4 divisors (see below), whose sum is σ = 63442320. Its totient is φ = 47581728.

The previous prime is 55512001. The next prime is 55512071. The reversal of 55512023 is 32021555.

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 55512023 - 2⁶ = 55511959 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 55512023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55511023) 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, 3965138 + ... + 3965151.

It is an arithmetic number, because the mean of its divisors is an integer number (15860580).

Almost surely, 2^55512023 is an apocalyptic number.

55512023 is a deficient number, since it is larger than the sum of its proper divisors (7930297).

55512023 is an equidigital number, since it uses as much as digits as its factorization.

55512023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7930296.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 55512023 is about 7450.6391001041. The cubic root of 55512023 is about 381.4717234684.

Adding to 55512023 its reverse (32021555), we get a palindrome (87533578).

The spelling of 55512023 in words is "fifty-five million, five hundred twelve thousand, twenty-three".