197956051 has 2 divisors, whose sum is σ = 197956052. Its totient is φ = 197956050.

The previous prime is 197956037. The next prime is 197956063. The reversal of 197956051 is 150659791.

It is a strong prime.

It is an emirp because it is prime and its reverse (150659791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197956051 - 2⁵ = 197956019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 197955989 and 197956007.

It is not a weakly prime, because it can be changed into another prime (197956021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98978025 + 98978026.

It is an arithmetic number, because the mean of its divisors is an integer number (98978026).

Almost surely, 2^197956051 is an apocalyptic number.

197956051 is a deficient number, since it is larger than the sum of its proper divisors (1).

197956051 is an equidigital number, since it uses as much as digits as its factorization.

197956051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 85050, while the sum is 43.

The square root of 197956051 is about 14069.6855330885. The cubic root of 197956051 is about 582.8045412752.

The spelling of 197956051 in words is "one hundred ninety-seven million, nine hundred fifty-six thousand, fifty-one".