457543561 has 4 divisors (see below), whose sum is σ = 459442324. Its totient is φ = 455644800.

The previous prime is 457543553. The next prime is 457543573. The reversal of 457543561 is 165345754.

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 387302400 + 70241161 = 19680^2 + 8381^2 .

It is a cyclic number.

It is not a de Polignac number, because 457543561 - 2³ = 457543553 is a prime.

It is a super-2 number, since 2×457543561² = 418692220425121442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (457543501) 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, 949020 + ... + 949501.

It is an arithmetic number, because the mean of its divisors is an integer number (114860581).

Almost surely, 2^457543561 is an apocalyptic number.

It is an amenable number.

457543561 is a deficient number, since it is larger than the sum of its proper divisors (1898763).

457543561 is a wasteful number, since it uses less digits than its factorization.

457543561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1898762.

The product of its digits is 252000, while the sum is 40.

The square root of 457543561 is about 21390.2679038856. The cubic root of 457543561 is about 770.5677271442.

The spelling of 457543561 in words is "four hundred fifty-seven million, five hundred forty-three thousand, five hundred sixty-one".