565495421 has 4 divisors (see below), whose sum is σ = 566151552. Its totient is φ = 564839292.

The previous prime is 565495393. The next prime is 565495433. The reversal of 565495421 is 124594565.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-565495421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565495481) 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, 326771 + ... + 328496.

It is an arithmetic number, because the mean of its divisors is an integer number (141537888).

Almost surely, 2^565495421 is an apocalyptic number.

It is an amenable number.

565495421 is a deficient number, since it is larger than the sum of its proper divisors (656131).

565495421 is an equidigital number, since it uses as much as digits as its factorization.

565495421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656130.

The product of its digits is 216000, while the sum is 41.

The square root of 565495421 is about 23780.1476235956. The cubic root of 565495421 is about 826.9445022113.

The spelling of 565495421 in words is "five hundred sixty-five million, four hundred ninety-five thousand, four hundred twenty-one".