56569121 has 8 divisors (see below), whose sum is σ = 67461504. Its totient is φ = 46379520.

The previous prime is 56569103. The next prime is 56569129. The reversal of 56569121 is 12196565.

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 56569121 - 2¹⁸ = 56306977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56569129) 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, 175520 + ... + 175841.

It is an arithmetic number, because the mean of its divisors is an integer number (8432688).

Almost surely, 2^56569121 is an apocalyptic number.

It is an amenable number.

56569121 is a deficient number, since it is larger than the sum of its proper divisors (10892383).

56569121 is a wasteful number, since it uses less digits than its factorization.

56569121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351391.

The product of its digits is 16200, while the sum is 35.

The square root of 56569121 is about 7521.2446443391. The cubic root of 56569121 is about 383.8779293158.

The spelling of 56569121 in words is "fifty-six million, five hundred sixty-nine thousand, one hundred twenty-one".