455371561 has 4 divisors (see below), whose sum is σ = 455458900. Its totient is φ = 455284224.

The previous prime is 455371559. The next prime is 455371577. The reversal of 455371561 is 165173554.

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 72777961 + 382593600 = 8531^2 + 19560^2 .

It is a cyclic number.

It is not a de Polignac number, because 455371561 - 2¹ = 455371559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 455371561.

It is not an unprimeable number, because it can be changed into a prime (455371541) 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, 35316 + ... + 46453.

It is an arithmetic number, because the mean of its divisors is an integer number (113864725).

Almost surely, 2^455371561 is an apocalyptic number.

It is an amenable number.

455371561 is a deficient number, since it is larger than the sum of its proper divisors (87339).

455371561 is an equidigital number, since it uses as much as digits as its factorization.

455371561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87338.

The product of its digits is 63000, while the sum is 37.

The square root of 455371561 is about 21339.4367545163. The cubic root of 455371561 is about 769.3464747789.

The spelling of 455371561 in words is "four hundred fifty-five million, three hundred seventy-one thousand, five hundred sixty-one".