50121217 has 2 divisors, whose sum is σ = 50121218. Its totient is φ = 50121216.

The previous prime is 50121191. The next prime is 50121233. The reversal of 50121217 is 71212105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47761921 + 2359296 = 6911^2 + 1536^2 .

It is a cyclic number.

It is not a de Polignac number, because 50121217 - 2⁷ = 50121089 is a prime.

It is a super-2 number, since 2×50121217² = 5024272787122178, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 50121194 and 50121203.

It is not a weakly prime, because it can be changed into another prime (50121277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25060608 + 25060609.

It is an arithmetic number, because the mean of its divisors is an integer number (25060609).

Almost surely, 2^50121217 is an apocalyptic number.

It is an amenable number.

50121217 is a deficient number, since it is larger than the sum of its proper divisors (1).

50121217 is an equidigital number, since it uses as much as digits as its factorization.

50121217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 50121217 is about 7079.6339594643. The cubic root of 50121217 is about 368.7006211004.

The spelling of 50121217 in words is "fifty million, one hundred twenty-one thousand, two hundred seventeen".