63195091 has 2 divisors, whose sum is σ = 63195092. Its totient is φ = 63195090.

The previous prime is 63195017. The next prime is 63195101. The reversal of 63195091 is 19059136.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63195091 - 2¹¹ = 63193043 is a prime.

It is not a weakly prime, because it can be changed into another prime (63195491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31597545 + 31597546.

It is an arithmetic number, because the mean of its divisors is an integer number (31597546).

Almost surely, 2^63195091 is an apocalyptic number.

63195091 is a deficient number, since it is larger than the sum of its proper divisors (1).

63195091 is an equidigital number, since it uses as much as digits as its factorization.

63195091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 63195091 is about 7949.5340115003. The cubic root of 63195091 is about 398.3160267842.

It can be divided in two parts, 631950 and 91, that multiplied together give a triangular number (57507450 = T₁₀₇₂₄).

The spelling of 63195091 in words is "sixty-three million, one hundred ninety-five thousand, ninety-one".