5121660 has 24 divisors (see below), whose sum is σ = 14340816. Its totient is φ = 1365760.

The previous prime is 5121653. The next prime is 5121667. The reversal of 5121660 is 661215.

It is a happy number.

5121660 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (5121653) and next prime (5121667).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5121667) 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, 42621 + ... + 42740.

It is an arithmetic number, because the mean of its divisors is an integer number (597534).

Almost surely, 2^5121660 is an apocalyptic number.

It is an amenable number.

5121660 is an abundant number, since it is smaller than the sum of its proper divisors (9219156).

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

5121660 is a wasteful number, since it uses less digits than its factorization.

5121660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85373 (or 85371 counting only the distinct ones).

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

The square root of 5121660 is about 2263.1084817127. The cubic root of 5121660 is about 172.3734000731.

Adding to 5121660 its reverse (661215), we get a palindrome (5782875).

The spelling of 5121660 in words is "five million, one hundred twenty-one thousand, six hundred sixty".