454547561 has 4 divisors (see below), whose sum is σ = 489512772. Its totient is φ = 419582352.

The previous prime is 454547543. The next prime is 454547563. The reversal of 454547561 is 165745454.

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 225600400 + 228947161 = 15020^2 + 15131^2 .

It is a cyclic number.

It is not a de Polignac number, because 454547561 - 2¹⁰ = 454546537 is a prime.

It is a super-2 number, since 2×454547561² = 413226970422097442, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (454547563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17482586 + ... + 17482611.

It is an arithmetic number, because the mean of its divisors is an integer number (122378193).

Almost surely, 2^454547561 is an apocalyptic number.

It is an amenable number.

454547561 is a deficient number, since it is larger than the sum of its proper divisors (34965211).

454547561 is a wasteful number, since it uses less digits than its factorization.

454547561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34965210.

The product of its digits is 336000, while the sum is 41.

The square root of 454547561 is about 21320.1210362418. The cubic root of 454547561 is about 768.8821475428.

The spelling of 454547561 in words is "four hundred fifty-four million, five hundred forty-seven thousand, five hundred sixty-one".