197555423 has 12 divisors (see below), whose sum is σ = 217557720. Its totient is φ = 179258976.

The previous prime is 197555417. The next prime is 197555431. The reversal of 197555423 is 324555791.

It is not a de Polignac number, because 197555423 - 2⁶ = 197555359 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 (197555443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65 + ... + 19877.

It is an arithmetic number, because the mean of its divisors is an integer number (18129810).

Almost surely, 2^197555423 is an apocalyptic number.

197555423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

197555423 is a deficient number, since it is larger than the sum of its proper divisors (20002297).

197555423 is a wasteful number, since it uses less digits than its factorization.

197555423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19898 (or 19885 counting only the distinct ones).

The product of its digits is 189000, while the sum is 41.

The square root of 197555423 is about 14055.4410460860. The cubic root of 197555423 is about 582.4111113420.

The spelling of 197555423 in words is "one hundred ninety-seven million, five hundred fifty-five thousand, four hundred twenty-three".