521150417 has 2 divisors, whose sum is σ = 521150418. Its totient is φ = 521150416.

The previous prime is 521150407. The next prime is 521150477. The reversal of 521150417 is 714051125.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 361608256 + 159542161 = 19016^2 + 12631^2 .

It is a cyclic number.

It is not a de Polignac number, because 521150417 - 2¹⁸ = 520888273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (521150407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260575208 + 260575209.

It is an arithmetic number, because the mean of its divisors is an integer number (260575209).

Almost surely, 2^521150417 is an apocalyptic number.

It is an amenable number.

521150417 is a deficient number, since it is larger than the sum of its proper divisors (1).

521150417 is an equidigital number, since it uses as much as digits as its factorization.

521150417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 521150417 is about 22828.7191274500. The cubic root of 521150417 is about 804.7377292028.

The spelling of 521150417 in words is "five hundred twenty-one million, one hundred fifty thousand, four hundred seventeen".