4661549 has 4 divisors (see below), whose sum is σ = 4666236. Its totient is φ = 4656864.

The previous prime is 4661543. The next prime is 4661551. The reversal of 4661549 is 9451664.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4380649 + 280900 = 2093^2 + 530^2 .

It is a cyclic number.

It is not a de Polignac number, because 4661549 - 2¹² = 4657453 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4661543) 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, 194 + ... + 3059.

It is an arithmetic number, because the mean of its divisors is an integer number (1166559).

Almost surely, 2^4661549 is an apocalyptic number.

It is an amenable number.

4661549 is a deficient number, since it is larger than the sum of its proper divisors (4687).

4661549 is a wasteful number, since it uses less digits than its factorization.

4661549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4686.

The product of its digits is 25920, while the sum is 35.

The square root of 4661549 is about 2159.0620648791. The cubic root of 4661549 is about 167.0488221843.

It can be divided in two parts, 46615 and 49, that added together give a palindrome (46664).

The spelling of 4661549 in words is "four million, six hundred sixty-one thousand, five hundred forty-nine".