4151661 has 8 divisors (see below), whose sum is σ = 5776320. Its totient is φ = 2647392.

The previous prime is 4151647. The next prime is 4151663. The reversal of 4151661 is 1661514.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4151661 - 2⁵ = 4151629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4151663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30016 + ... + 30153.

It is an arithmetic number, because the mean of its divisors is an integer number (722040).

Almost surely, 2^4151661 is an apocalyptic number.

It is an amenable number.

4151661 is a deficient number, since it is larger than the sum of its proper divisors (1624659).

4151661 is a wasteful number, since it uses less digits than its factorization.

4151661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60195.

The product of its digits is 720, while the sum is 24.

The square root of 4151661 is about 2037.5625143784. The cubic root of 4151661 is about 160.7214942516.

The spelling of 4151661 in words is "four million, one hundred fifty-one thousand, six hundred sixty-one".