471521 has 2 divisors, whose sum is σ = 471522. Its totient is φ = 471520.

The previous prime is 471509. The next prime is 471533. The reversal of 471521 is 125174.

It is a balanced prime because it is at equal distance from previous prime (471509) and next prime (471533).

It can be written as a sum of positive squares in only one way, i.e., 440896 + 30625 = 664^2 + 175^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-471521 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 471493 and 471502.

It is not a weakly prime, because it can be changed into another prime (471571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235760 + 235761.

It is an arithmetic number, because the mean of its divisors is an integer number (235761).

2⁴⁷¹⁵²¹ is an apocalyptic number.

It is an amenable number.

471521 is a deficient number, since it is larger than the sum of its proper divisors (1).

471521 is an equidigital number, since it uses as much as digits as its factorization.

471521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 280, while the sum is 20.

The square root of 471521 is about 686.6738672762. The cubic root of 471521 is about 77.8335811926.

Adding to 471521 its reverse (125174), we get a palindrome (596695).

The spelling of 471521 in words is "four hundred seventy-one thousand, five hundred twenty-one".