56171293 has 4 divisors (see below), whose sum is σ = 56351068. Its totient is φ = 55991520.

The previous prime is 56171273. The next prime is 56171309. The reversal of 56171293 is 39217165.

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

It can be written as a sum of positive squares in 2 ways, for example, as 190969 + 55980324 = 437^2 + 7482^2 .

It is a cyclic number.

It is not a de Polignac number, because 56171293 - 2⁵ = 56171261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56171243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89418 + ... + 90043.

It is an arithmetic number, because the mean of its divisors is an integer number (14087767).

Almost surely, 2^56171293 is an apocalyptic number.

It is an amenable number.

56171293 is a deficient number, since it is larger than the sum of its proper divisors (179775).

56171293 is a wasteful number, since it uses less digits than its factorization.

56171293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179774.

The product of its digits is 11340, while the sum is 34.

The square root of 56171293 is about 7494.7510298875. The cubic root of 56171293 is about 382.9759248797.

The spelling of 56171293 in words is "fifty-six million, one hundred seventy-one thousand, two hundred ninety-three".