50166521 has 2 divisors, whose sum is σ = 50166522. Its totient is φ = 50166520.

The previous prime is 50166469. The next prime is 50166527. The reversal of 50166521 is 12566105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45414121 + 4752400 = 6739^2 + 2180^2 .

It is a cyclic number.

It is not a de Polignac number, because 50166521 - 2¹⁸ = 49904377 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (50166527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25083260 + 25083261.

It is an arithmetic number, because the mean of its divisors is an integer number (25083261).

Almost surely, 2^50166521 is an apocalyptic number.

It is an amenable number.

50166521 is a deficient number, since it is larger than the sum of its proper divisors (1).

50166521 is an equidigital number, since it uses as much as digits as its factorization.

50166521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 50166521 is about 7082.8328372199. The cubic root of 50166521 is about 368.8116757510.

The spelling of 50166521 in words is "fifty million, one hundred sixty-six thousand, five hundred twenty-one".