56881019 has 8 divisors (see below), whose sum is σ = 61476912. Its totient is φ = 52316640.

The previous prime is 56881007. The next prime is 56881049. The reversal of 56881019 is 91018865.

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 56881019 - 2¹² = 56876923 is a prime.

It is a super-3 number, since 3×56881019³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56881049) 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, 4052 + ... + 11409.

It is an arithmetic number, because the mean of its divisors is an integer number (7684614).

Almost surely, 2^56881019 is an apocalyptic number.

56881019 is a deficient number, since it is larger than the sum of its proper divisors (4595893).

56881019 is a wasteful number, since it uses less digits than its factorization.

56881019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15757.

The product of its (nonzero) digits is 17280, while the sum is 38.

The square root of 56881019 is about 7541.9506097561. The cubic root of 56881019 is about 384.5821496851.

The spelling of 56881019 in words is "fifty-six million, eight hundred eighty-one thousand, nineteen".