196122557 has 8 divisors (see below), whose sum is σ = 212724792. Its totient is φ = 180083200.

The previous prime is 196122551. The next prime is 196122559. The reversal of 196122557 is 755221691.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 290521 + 195832036 = 539^2 + 13994^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 196122557 - 2¹⁰ = 196121533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 196122557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196122551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139994 + ... + 141387.

It is an arithmetic number, because the mean of its divisors is an integer number (26590599).

Almost surely, 2^196122557 is an apocalyptic number.

196122557 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

196122557 is a deficient number, since it is larger than the sum of its proper divisors (16602235).

196122557 is a wasteful number, since it uses less digits than its factorization.

196122557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281439.

The product of its digits is 37800, while the sum is 38.

The square root of 196122557 is about 14004.3763516981. The cubic root of 196122557 is about 580.9996208090. Note that the first 3 decimals are identical.

The spelling of 196122557 in words is "one hundred ninety-six million, one hundred twenty-two thousand, five hundred fifty-seven".