196117557 has 4 divisors (see below), whose sum is σ = 261490080. Its totient is φ = 130745036.

The previous prime is 196117541. The next prime is 196117577. The reversal of 196117557 is 755711691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 196117557 - 2⁴ = 196117541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196117507) 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, 32686257 + ... + 32686262.

It is an arithmetic number, because the mean of its divisors is an integer number (65372520).

Almost surely, 2^196117557 is an apocalyptic number.

It is an amenable number.

196117557 is a deficient number, since it is larger than the sum of its proper divisors (65372523).

196117557 is an equidigital number, since it uses as much as digits as its factorization.

196117557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65372522.

The product of its digits is 66150, while the sum is 42.

The square root of 196117557 is about 14004.1978349351. The cubic root of 196117557 is about 580.9946833814.

The spelling of 196117557 in words is "one hundred ninety-six million, one hundred seventeen thousand, five hundred fifty-seven".