553909123 has 4 divisors (see below), whose sum is σ = 553974840. Its totient is φ = 553843408.

The previous prime is 553909121. The next prime is 553909141. The reversal of 553909123 is 321909355.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321909355 = 5 ⋅64381871.

It is a cyclic number.

It is not a de Polignac number, because 553909123 - 2¹ = 553909121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (553909121) 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, 17965 + ... + 37822.

It is an arithmetic number, because the mean of its divisors is an integer number (138493710).

Almost surely, 2^553909123 is an apocalyptic number.

553909123 is a deficient number, since it is larger than the sum of its proper divisors (65717).

553909123 is an equidigital number, since it uses as much as digits as its factorization.

553909123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65716.

The product of its (nonzero) digits is 36450, while the sum is 37.

The square root of 553909123 is about 23535.2740158257. The cubic root of 553909123 is about 821.2577975192.

The spelling of 553909123 in words is "five hundred fifty-three million, nine hundred nine thousand, one hundred twenty-three".