553216123 has 4 divisors (see below), whose sum is σ = 558919480. Its totient is φ = 547512768.

The previous prime is 553216117. The next prime is 553216163. The reversal of 553216123 is 321612355.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321612355 = 5 ⋅64322471.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-553216123 is a prime.

It is a super-2 number, since 2×553216123² = 612096157494302258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 553216091 and 553216100.

It is not an unprimeable number, because it can be changed into a prime (553216163) 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, 2851533 + ... + 2851726.

It is an arithmetic number, because the mean of its divisors is an integer number (139729870).

Almost surely, 2^553216123 is an apocalyptic number.

553216123 is a deficient number, since it is larger than the sum of its proper divisors (5703357).

553216123 is an equidigital number, since it uses as much as digits as its factorization.

553216123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5703356.

The product of its digits is 5400, while the sum is 28.

The square root of 553216123 is about 23520.5468261263. The cubic root of 553216123 is about 820.9151605875.

Adding to 553216123 its reverse (321612355), we get a palindrome (874828478).

The spelling of 553216123 in words is "five hundred fifty-three million, two hundred sixteen thousand, one hundred twenty-three".