411727561 has 4 divisors (see below), whose sum is σ = 470545792. Its totient is φ = 352909332.

The previous prime is 411727541. The next prime is 411727571. The reversal of 411727561 is 165727114.

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 not a de Polignac number, because 411727561 - 2¹⁷ = 411596489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (411727501) 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, 29409105 + ... + 29409118.

It is an arithmetic number, because the mean of its divisors is an integer number (117636448).

Almost surely, 2^411727561 is an apocalyptic number.

It is an amenable number.

411727561 is a deficient number, since it is larger than the sum of its proper divisors (58818231).

411727561 is an equidigital number, since it uses as much as digits as its factorization.

411727561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58818230.

The product of its digits is 11760, while the sum is 34.

The square root of 411727561 is about 20291.0709672999. The cubic root of 411727561 is about 743.9378350428.

The spelling of 411727561 in words is "four hundred eleven million, seven hundred twenty-seven thousand, five hundred sixty-one".