5211660 has 24 divisors (see below), whose sum is σ = 14592816. Its totient is φ = 1389760.

The previous prime is 5211659. The next prime is 5211667. The reversal of 5211660 is 661125.

It is a happy number.

It is a super-2 number, since 2×5211660² = 54322799911200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5211667) 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, 43371 + ... + 43490.

It is an arithmetic number, because the mean of its divisors is an integer number (608034).

Almost surely, 2^5211660 is an apocalyptic number.

It is an amenable number.

5211660 is an abundant number, since it is smaller than the sum of its proper divisors (9381156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5211660 is a wasteful number, since it uses less digits than its factorization.

5211660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86873 (or 86871 counting only the distinct ones).

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

The square root of 5211660 is about 2282.9060427446. The cubic root of 5211660 is about 173.3772160425.

Adding to 5211660 its reverse (661125), we get a palindrome (5872785).

The spelling of 5211660 in words is "five million, two hundred eleven thousand, six hundred sixty".