5121656 has 24 divisors (see below), whose sum is σ = 9816960. Its totient is φ = 2504880.

The previous prime is 5121653. The next prime is 5121667. The reversal of 5121656 is 6561215.

5121656 = T₁₀₄ + T₁₀₅ + ... + T₃₁₆.

Its product of digits (1800) is a multiple of the sum of its prime divisors (200).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5121653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40265 + ... + 40391.

It is an arithmetic number, because the mean of its divisors is an integer number (409040).

Almost surely, 2^5121656 is an apocalyptic number.

It is an amenable number.

5121656 is a deficient number, since it is larger than the sum of its proper divisors (4695304).

5121656 is a wasteful number, since it uses less digits than its factorization.

5121656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275 (or 200 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

The square root of 5121656 is about 2263.1075979723. The cubic root of 5121656 is about 172.3733551987.

The spelling of 5121656 in words is "five million, one hundred twenty-one thousand, six hundred fifty-six".