541665653 has 4 divisors (see below), whose sum is σ = 541760268. Its totient is φ = 541571040.

The previous prime is 541665629. The next prime is 541665667. The reversal of 541665653 is 356566145.

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 59336209 + 482329444 = 7703^2 + 21962^2 .

It is a cyclic number.

It is not a de Polignac number, because 541665653 - 2⁶ = 541665589 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 541665653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (541665673) 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, 38126 + ... + 50367.

It is an arithmetic number, because the mean of its divisors is an integer number (135440067).

Almost surely, 2^541665653 is an apocalyptic number.

It is an amenable number.

541665653 is a deficient number, since it is larger than the sum of its proper divisors (94615).

541665653 is an equidigital number, since it uses as much as digits as its factorization.

541665653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94614.

The product of its digits is 324000, while the sum is 41.

The square root of 541665653 is about 23273.7116292181. The cubic root of 541665653 is about 815.1616992571.

The spelling of 541665653 in words is "five hundred forty-one million, six hundred sixty-five thousand, six hundred fifty-three".