195230551 has 2 divisors, whose sum is σ = 195230552. Its totient is φ = 195230550.

The previous prime is 195230471. The next prime is 195230579. The reversal of 195230551 is 155032591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 195230551 - 2¹¹ = 195228503 is a prime.

It is a super-2 number, since 2×195230551² = 76229936087527202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195230051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97615275 + 97615276.

It is an arithmetic number, because the mean of its divisors is an integer number (97615276).

Almost surely, 2^195230551 is an apocalyptic number.

195230551 is a deficient number, since it is larger than the sum of its proper divisors (1).

195230551 is an equidigital number, since it uses as much as digits as its factorization.

195230551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6750, while the sum is 31.

The square root of 195230551 is about 13972.4926552137. The cubic root of 195230551 is about 580.1174464897.

The spelling of 195230551 in words is "one hundred ninety-five million, two hundred thirty thousand, five hundred fifty-one".