56971066 has 4 divisors (see below), whose sum is σ = 85456602. Its totient is φ = 28485532.

The previous prime is 56971043. The next prime is 56971067. The reversal of 56971066 is 66017965.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 45171841 + 11799225 = 6721^2 + 3435^2 .

It is a super-3 number, since 3×56971066³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (56971067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14242765 + ... + 14242768.

Almost surely, 2^56971066 is an apocalyptic number.

56971066 is a deficient number, since it is larger than the sum of its proper divisors (28485536).

56971066 is a wasteful number, since it uses less digits than its factorization.

56971066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28485535.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 56971066 is about 7547.9179910754. The cubic root of 56971066 is about 384.7849836666.

The spelling of 56971066 in words is "fifty-six million, nine hundred seventy-one thousand, sixty-six".