56701511221 has 8 divisors (see below), whose sum is σ = 60166571904. Its totient is φ = 53250859200.

The previous prime is 56701511189. The next prime is 56701511233. The reversal of 56701511221 is 12211510765.

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

It is a cyclic number.

It is not a de Polignac number, because 56701511221 - 2⁵ = 56701511189 is a prime.

It is a super-2 number, since 2×56701511221² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56701511291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3594055 + ... + 3609796.

It is an arithmetic number, because the mean of its divisors is an integer number (7520821488).

Almost surely, 2^56701511221 is an apocalyptic number.

It is an amenable number.

56701511221 is a deficient number, since it is larger than the sum of its proper divisors (3465060683).

56701511221 is a wasteful number, since it uses less digits than its factorization.

56701511221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7204331.

The product of its (nonzero) digits is 4200, while the sum is 31.

The spelling of 56701511221 in words is "fifty-six billion, seven hundred one million, five hundred eleven thousand, two hundred twenty-one".