469545561 has 27 divisors (see below), whose sum is σ = 703837407. Its totient is φ = 301632480.

The previous prime is 469545553. The next prime is 469545569. The reversal of 469545561 is 165545964.

The square root of 469545561 is 21669.

It is a perfect power (a square), and thus also a powerful number.

469545561 is a `hidden beast` number, since 4 + 6 + 95 + 4 + 556 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (469545553) and next prime (469545569).

It can be written as a sum of positive squares in only one way, i.e., 95355225 + 374190336 = 9765^2 + 19344^2 .

It is not a de Polignac number, because 469545561 - 2³ = 469545553 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (469545569) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2015101 + ... + 2015333.

Almost surely, 2^469545561 is an apocalyptic number.

469545561 is the 21669-th square number.

469545561 is the 10835-th centered octagonal number.

It is an amenable number.

469545561 is a deficient number, since it is larger than the sum of its proper divisors (234291846).

469545561 is an equidigital number, since it uses as much as digits as its factorization.

469545561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534 (or 267 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The cubic root of 469545561 is about 777.2473435250.

The spelling of 469545561 in words is "four hundred sixty-nine million, five hundred forty-five thousand, five hundred sixty-one".