56897321655 has 8 divisors (see below), whose sum is σ = 91035714672. Its totient is φ = 30345238208.

The previous prime is 56897321651. The next prime is 56897321659. The reversal of 56897321655 is 55612379865.

It is an interprime number because it is at equal distance from previous prime (56897321651) and next prime (56897321659).

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 56897321655 - 2² = 56897321651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56897321595 and 56897321604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56897321651) 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, 1896577374 + ... + 1896577403.

It is an arithmetic number, because the mean of its divisors is an integer number (11379464334).

Almost surely, 2^56897321655 is an apocalyptic number.

56897321655 is a deficient number, since it is larger than the sum of its proper divisors (34138393017).

56897321655 is a wasteful number, since it uses less digits than its factorization.

56897321655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3793154785.

The product of its digits is 13608000, while the sum is 57.

The spelling of 56897321655 in words is "fifty-six billion, eight hundred ninety-seven million, three hundred twenty-one thousand, six hundred fifty-five".