63091577 has 2 divisors, whose sum is σ = 63091578. Its totient is φ = 63091576.

The previous prime is 63091547. The next prime is 63091583. The reversal of 63091577 is 77519036.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55413136 + 7678441 = 7444^2 + 2771^2 .

It is a cyclic number.

It is not a de Polignac number, because 63091577 - 2²⁴ = 46314361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63091577.

It is not a weakly prime, because it can be changed into another prime (63091547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31545788 + 31545789.

It is an arithmetic number, because the mean of its divisors is an integer number (31545789).

Almost surely, 2^63091577 is an apocalyptic number.

It is an amenable number.

63091577 is a deficient number, since it is larger than the sum of its proper divisors (1).

63091577 is an equidigital number, since it uses as much as digits as its factorization.

63091577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 63091577 is about 7943.0206470838. The cubic root of 63091577 is about 398.0984264536.

The spelling of 63091577 in words is "sixty-three million, ninety-one thousand, five hundred seventy-seven".