475921 has 2 divisors, whose sum is σ = 475922. Its totient is φ = 475920.

The previous prime is 475907. The next prime is 475927. The reversal of 475921 is 129574.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 408321 + 67600 = 639^2 + 260^2 .

It is a cyclic number.

It is not a de Polignac number, because 475921 - 2⁵ = 475889 is a prime.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 475921.

It is not a weakly prime, because it can be changed into another prime (475927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237960 + 237961.

It is an arithmetic number, because the mean of its divisors is an integer number (237961).

2⁴⁷⁵⁹²¹ is an apocalyptic number.

It is an amenable number.

475921 is a deficient number, since it is larger than the sum of its proper divisors (1).

475921 is an equidigital number, since it uses as much as digits as its factorization.

475921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 28.

The square root of 475921 is about 689.8702776610. The cubic root of 475921 is about 78.0749334683.

The spelling of 475921 in words is "four hundred seventy-five thousand, nine hundred twenty-one".