424036561 has 4 divisors (see below), whose sum is σ = 456654772. Its totient is φ = 391418352.

The previous prime is 424036553. The next prime is 424036573. The reversal of 424036561 is 165630424.

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 124746561 + 299290000 = 11169^2 + 17300^2 .

It is not a de Polignac number, because 424036561 - 2³ = 424036553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (424036511) 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, 16309086 + ... + 16309111.

It is an arithmetic number, because the mean of its divisors is an integer number (114163693).

Almost surely, 2^424036561 is an apocalyptic number.

It is an amenable number.

424036561 is a deficient number, since it is larger than the sum of its proper divisors (32618211).

424036561 is a wasteful number, since it uses less digits than its factorization.

424036561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32618210.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 424036561 is about 20592.1480423971. The cubic root of 424036561 is about 751.2787435512.

Adding to 424036561 its reverse (165630424), we get a palindrome (589666985).

The spelling of 424036561 in words is "four hundred twenty-four million, thirty-six thousand, five hundred sixty-one".