210145417 has 2 divisors, whose sum is σ = 210145418. Its totient is φ = 210145416.

The previous prime is 210145391. The next prime is 210145421. The reversal of 210145417 is 714541012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205176976 + 4968441 = 14324^2 + 2229^2 .

It is a cyclic number.

It is not a de Polignac number, because 210145417 - 2⁷ = 210145289 is a prime.

It is a super-2 number, since 2×210145417² = 88322192572207778, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210145391 and 210145400.

It is not a weakly prime, because it can be changed into another prime (210145447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105072708 + 105072709.

It is an arithmetic number, because the mean of its divisors is an integer number (105072709).

Almost surely, 2^210145417 is an apocalyptic number.

It is an amenable number.

210145417 is a deficient number, since it is larger than the sum of its proper divisors (1).

210145417 is an equidigital number, since it uses as much as digits as its factorization.

210145417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 210145417 is about 14496.3932410790. The cubic root of 210145417 is about 594.5293616043.

Adding to 210145417 its reverse (714541012), we get a palindrome (924686429).

The spelling of 210145417 in words is "two hundred ten million, one hundred forty-five thousand, four hundred seventeen".