196522551 has 8 divisors (see below), whose sum is σ = 291144560. Its totient is φ = 131015016.

The previous prime is 196522549. The next prime is 196522559. The reversal of 196522551 is 155225691.

It is not a de Polignac number, because 196522551 - 2¹ = 196522549 is a prime.

It is a super-2 number, since 2×196522551² = 77242226103095202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196522559) 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, 3639280 + ... + 3639333.

It is an arithmetic number, because the mean of its divisors is an integer number (36393070).

Almost surely, 2^196522551 is an apocalyptic number.

196522551 is a deficient number, since it is larger than the sum of its proper divisors (94622009).

196522551 is an equidigital number, since it uses as much as digits as its factorization.

196522551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7278622 (or 7278616 counting only the distinct ones).

The product of its digits is 27000, while the sum is 36.

The square root of 196522551 is about 14018.6501133312. The cubic root of 196522551 is about 581.3943375158.

The spelling of 196522551 in words is "one hundred ninety-six million, five hundred twenty-two thousand, five hundred fifty-one".