56490983581 has 8 divisors (see below), whose sum is σ = 56596688064. Its totient is φ = 56385319200.

The previous prime is 56490983567. The next prime is 56490983611. The reversal of 56490983581 is 18538909465.

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 56490983581 - 2⁷ = 56490983453 is a prime.

It is a super-2 number, since 2×56490983581² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56490983531) 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, 5381520 + ... + 5392006.

It is an arithmetic number, because the mean of its divisors is an integer number (7074586008).

Almost surely, 2^56490983581 is an apocalyptic number.

It is an amenable number.

56490983581 is a deficient number, since it is larger than the sum of its proper divisors (105704483).

56490983581 is a wasteful number, since it uses less digits than its factorization.

56490983581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20051.

The product of its (nonzero) digits is 9331200, while the sum is 58.

The spelling of 56490983581 in words is "fifty-six billion, four hundred ninety million, nine hundred eighty-three thousand, five hundred eighty-one".