416747521 has 2 divisors, whose sum is σ = 416747522. Its totient is φ = 416747520.

The previous prime is 416747519. The next prime is 416747567. The reversal of 416747521 is 125747614.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 393466896 + 23280625 = 19836^2 + 4825^2 .

It is a cyclic number.

It is not a de Polignac number, because 416747521 - 2¹ = 416747519 is a prime.

Together with 416747519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (416747921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208373760 + 208373761.

It is an arithmetic number, because the mean of its divisors is an integer number (208373761).

Almost surely, 2^416747521 is an apocalyptic number.

It is an amenable number.

416747521 is a deficient number, since it is larger than the sum of its proper divisors (1).

416747521 is an equidigital number, since it uses as much as digits as its factorization.

416747521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 37.

The square root of 416747521 is about 20414.3949457240. The cubic root of 416747521 is about 746.9491001006.

The spelling of 416747521 in words is "four hundred sixteen million, seven hundred forty-seven thousand, five hundred twenty-one".