5656120521 has 8 divisors (see below), whose sum is σ = 7542022560. Its totient is φ = 3770482752.

The previous prime is 5656120517. The next prime is 5656120529. The reversal of 5656120521 is 1250216565.

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

It is not a de Polignac number, because 5656120521 - 2² = 5656120517 is a prime.

It is a super-2 number, since 2×5656120521² = 63983398696154622882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5656120529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9111 + ... + 106748.

It is an arithmetic number, because the mean of its divisors is an integer number (942752820).

Almost surely, 2^5656120521 is an apocalyptic number.

It is an amenable number.

5656120521 is a deficient number, since it is larger than the sum of its proper divisors (1885902039).

5656120521 is a wasteful number, since it uses less digits than its factorization.

5656120521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132135.

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 5656120521 is about 75207.1839720116. The cubic root of 5656120521 is about 1781.7203962854.

The spelling of 5656120521 in words is "five billion, six hundred fifty-six million, one hundred twenty thousand, five hundred twenty-one".