496411561 has 4 divisors (see below), whose sum is σ = 496629972. Its totient is φ = 496193152.

The previous prime is 496411541. The next prime is 496411637. The reversal of 496411561 is 165114694.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 165114694 = 2 ⋅82557347.

It can be written as a sum of positive squares in 2 ways, for example, as 130416400 + 365995161 = 11420^2 + 19131^2 .

It is a cyclic number.

It is not a de Polignac number, because 496411561 - 2¹⁵ = 496378793 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 496411561.

It is not an unprimeable number, because it can be changed into a prime (496411501) 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, 105760 + ... + 110353.

It is an arithmetic number, because the mean of its divisors is an integer number (124157493).

Almost surely, 2^496411561 is an apocalyptic number.

It is an amenable number.

496411561 is a deficient number, since it is larger than the sum of its proper divisors (218411).

496411561 is a wasteful number, since it uses less digits than its factorization.

496411561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218410.

The product of its digits is 25920, while the sum is 37.

The square root of 496411561 is about 22280.2953526204. The cubic root of 496411561 is about 791.7972014388.

The spelling of 496411561 in words is "four hundred ninety-six million, four hundred eleven thousand, five hundred sixty-one".