56172000 has 192 divisors, whose sum is σ = 191213568. Its totient is φ = 14400000.

The previous prime is 56171981. The next prime is 56172001. The reversal of 56172000 is 27165.

56172000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 371925 + ... + 372075.

It is an arithmetic number, because the mean of its divisors is an integer number (995904).

Almost surely, 2^56172000 is an apocalyptic number.

56172000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56172000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95606784).

56172000 is an abundant number, since it is smaller than the sum of its proper divisors (135041568).

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

56172000 is a wasteful number, since it uses less digits than its factorization.

56172000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 192 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 56172000 is about 7494.7981960824. The cubic root of 56172000 is about 382.9775316485.

Adding to 56172000 its reverse (27165), we get a palindrome (56199165).

The spelling of 56172000 in words is "fifty-six million, one hundred seventy-two thousand".