655050191 has 2 divisors, whose sum is σ = 655050192. Its totient is φ = 655050190.

The previous prime is 655050169. The next prime is 655050217. The reversal of 655050191 is 191050556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 655050191 - 2⁶ = 655050127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655050791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327525095 + 327525096.

It is an arithmetic number, because the mean of its divisors is an integer number (327525096).

Almost surely, 2^655050191 is an apocalyptic number.

655050191 is a deficient number, since it is larger than the sum of its proper divisors (1).

655050191 is an equidigital number, since it uses as much as digits as its factorization.

655050191 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 32.

The square root of 655050191 is about 25593.9483276809. The cubic root of 655050191 is about 868.4767422002.

The spelling of 655050191 in words is "six hundred fifty-five million, fifty thousand, one hundred ninety-one".