1617553423 has 4 divisors (see below), whose sum is σ = 1617649600. Its totient is φ = 1617457248.

The previous prime is 1617553397. The next prime is 1617553447. The reversal of 1617553423 is 3243557161.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1617553423 - 2²⁹ = 1080682511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1617553523) 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, 15498 + ... + 58951.

It is an arithmetic number, because the mean of its divisors is an integer number (404412400).

Almost surely, 2^1617553423 is an apocalyptic number.

1617553423 is a deficient number, since it is larger than the sum of its proper divisors (96177).

1617553423 is an equidigital number, since it uses as much as digits as its factorization.

1617553423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96176.

The product of its digits is 75600, while the sum is 37.

The square root of 1617553423 is about 40218.8192641206. The cubic root of 1617553423 is about 1173.8687583469.

The spelling of 1617553423 in words is "one billion, six hundred seventeen million, five hundred fifty-three thousand, four hundred twenty-three".