506224561 has 4 divisors (see below), whose sum is σ = 507323124. Its totient is φ = 505126000.

The previous prime is 506224547. The next prime is 506224573. The reversal of 506224561 is 165422605.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 165422605 = 5 ⋅33084521.

It can be written as a sum of positive squares in 2 ways, for example, as 253414561 + 252810000 = 15919^2 + 15900^2 .

It is a cyclic number.

It is not a de Polignac number, because 506224561 - 2⁵ = 506224529 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (506224501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548590 + ... + 549511.

It is an arithmetic number, because the mean of its divisors is an integer number (126830781).

Almost surely, 2^506224561 is an apocalyptic number.

It is an amenable number.

506224561 is a deficient number, since it is larger than the sum of its proper divisors (1098563).

506224561 is a wasteful number, since it uses less digits than its factorization.

506224561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098562.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 506224561 is about 22499.4346817870. The cubic root of 506224561 is about 796.9805770479.

The spelling of 506224561 in words is "five hundred six million, two hundred twenty-four thousand, five hundred sixty-one".