57106981 has 8 divisors (see below), whose sum is σ = 58091040. Its totient is φ = 56126928.

The previous prime is 57106979. The next prime is 57106997. The reversal of 57106981 is 18960175.

57106981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 57106981 - 2¹ = 57106979 is a prime.

It is a super-2 number, since 2×57106981² = 6522414557868722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57106981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57101981) 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, 44730 + ... + 45988.

It is an arithmetic number, because the mean of its divisors is an integer number (7261380).

Almost surely, 2^57106981 is an apocalyptic number.

It is an amenable number.

57106981 is a deficient number, since it is larger than the sum of its proper divisors (984059).

57106981 is a wasteful number, since it uses less digits than its factorization.

57106981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 57106981 is about 7556.9161038085. The cubic root of 57106981 is about 385.0907325369.

The spelling of 57106981 in words is "fifty-seven million, one hundred six thousand, nine hundred eighty-one".