55520023 has 8 divisors (see below), whose sum is σ = 59896928. Its totient is φ = 51158304.

The previous prime is 55519973. The next prime is 55520051. The reversal of 55520023 is 32002555.

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

It is a cyclic number.

It is not a de Polignac number, because 55520023 - 2¹⁷ = 55388951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55519976 and 55520003.

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, 4486 + ... + 11452.

It is an arithmetic number, because the mean of its divisors is an integer number (7487116).

Almost surely, 2^55520023 is an apocalyptic number.

55520023 is a deficient number, since it is larger than the sum of its proper divisors (4376905).

55520023 is a wasteful number, since it uses less digits than its factorization.

55520023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7593.

The product of its (nonzero) digits is 1500, while the sum is 22.

The square root of 55520023 is about 7451.1759474596. The cubic root of 55520023 is about 381.4900475902.

Adding to 55520023 its reverse (32002555), we get a palindrome (87522578).

The spelling of 55520023 in words is "fifty-five million, five hundred twenty thousand, twenty-three".