63166549 has 2 divisors, whose sum is σ = 63166550. Its totient is φ = 63166548.

The previous prime is 63166531. The next prime is 63166559. The reversal of 63166549 is 94566136.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58629649 + 4536900 = 7657^2 + 2130^2 .

It is a cyclic number.

It is not a de Polignac number, because 63166549 - 2⁵ = 63166517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63166559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31583274 + 31583275.

It is an arithmetic number, because the mean of its divisors is an integer number (31583275).

Almost surely, 2^63166549 is an apocalyptic number.

It is an amenable number.

63166549 is a deficient number, since it is larger than the sum of its proper divisors (1).

63166549 is an equidigital number, since it uses as much as digits as its factorization.

63166549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 40.

The square root of 63166549 is about 7947.7386091894. The cubic root of 63166549 is about 398.2560514082.

The spelling of 63166549 in words is "sixty-three million, one hundred sixty-six thousand, five hundred forty-nine".