5660121 has 8 divisors (see below), whose sum is σ = 7558720. Its totient is φ = 3767472.

The previous prime is 5660101. The next prime is 5660147. The reversal of 5660121 is 1210665.

It is a happy number.

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

It is not a de Polignac number, because 5660121 - 2⁷ = 5659993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5660101) 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, 1731 + ... + 3783.

It is an arithmetic number, because the mean of its divisors is an integer number (944840).

Almost surely, 2^5660121 is an apocalyptic number.

It is an amenable number.

5660121 is a deficient number, since it is larger than the sum of its proper divisors (1898599).

5660121 is a wasteful number, since it uses less digits than its factorization.

5660121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2975.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 5660121 is about 2379.1008805849. The cubic root of 5660121 is about 178.2140357589.

Adding to 5660121 its reverse (1210665), we get a palindrome (6870786).

The spelling of 5660121 in words is "five million, six hundred sixty thousand, one hundred twenty-one".