56172006 has 24 divisors (see below), whose sum is σ = 132770664. Its totient is φ = 17021760.

The previous prime is 56172001. The next prime is 56172007. The reversal of 56172006 is 60027165.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56172001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141651 + ... + 142046.

It is an arithmetic number, because the mean of its divisors is an integer number (5532111).

Almost surely, 2^56172006 is an apocalyptic number.

56172006 is an abundant number, since it is smaller than the sum of its proper divisors (76598658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56172006 is a wasteful number, since it uses less digits than its factorization.

56172006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283716 (or 283713 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 56172006 is about 7494.7985963600. The cubic root of 56172006 is about 382.9775452844.

The spelling of 56172006 in words is "fifty-six million, one hundred seventy-two thousand, six".