470981561 has 2 divisors, whose sum is σ = 470981562. Its totient is φ = 470981560.

The previous prime is 470981531. The next prime is 470981569. The reversal of 470981561 is 165189074.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 355096336 + 115885225 = 18844^2 + 10765^2 .

It is a cyclic number.

It is not a de Polignac number, because 470981561 - 2¹⁰ = 470980537 is a prime.

It is not a weakly prime, because it can be changed into another prime (470981569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235490780 + 235490781.

It is an arithmetic number, because the mean of its divisors is an integer number (235490781).

Almost surely, 2^470981561 is an apocalyptic number.

It is an amenable number.

470981561 is a deficient number, since it is larger than the sum of its proper divisors (1).

470981561 is an equidigital number, since it uses as much as digits as its factorization.

470981561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 470981561 is about 21702.1095979170. The cubic root of 470981561 is about 778.0388828336.

The spelling of 470981561 in words is "four hundred seventy million, nine hundred eighty-one thousand, five hundred sixty-one".