469451561 has 4 divisors (see below), whose sum is σ = 469650132. Its totient is φ = 469252992.

The previous prime is 469451533. The next prime is 469451611. The reversal of 469451561 is 165154964.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14440000 + 455011561 = 3800^2 + 21331^2 .

It is a cyclic number.

It is not a de Polignac number, because 469451561 - 2⁶ = 469451497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (469451531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95696 + ... + 100481.

It is an arithmetic number, because the mean of its divisors is an integer number (117412533).

Almost surely, 2^469451561 is an apocalyptic number.

It is an amenable number.

469451561 is a deficient number, since it is larger than the sum of its proper divisors (198571).

469451561 is a wasteful number, since it uses less digits than its factorization.

469451561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198570.

The product of its digits is 129600, while the sum is 41.

The square root of 469451561 is about 21666.8308942494. The cubic root of 469451561 is about 777.1954734245.

The spelling of 469451561 in words is "four hundred sixty-nine million, four hundred fifty-one thousand, five hundred sixty-one".