51894700 has 144 divisors (see below), whose sum is σ = 139991040. Its totient is φ = 16416000.

The previous prime is 51894631. The next prime is 51894707. The reversal of 51894700 is 749815.

It is a happy number.

It is a hoax number, since the sum of its digits (34) 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 (51894707) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 271605 + ... + 271795.

It is an arithmetic number, because the mean of its divisors is an integer number (972160).

Almost surely, 2^51894700 is an apocalyptic number.

51894700 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 51894700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69995520).

51894700 is an abundant number, since it is smaller than the sum of its proper divisors (88096340).

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

51894700 is a wasteful number, since it uses less digits than its factorization.

51894700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 51894700 is about 7203.7976095945. The cubic root of 51894700 is about 372.9990009245. Note that the first 3 decimals are identical.

It can be divided in two parts, 5189 and 4700, that added together give a palindrome (9889).

The spelling of 51894700 in words is "fifty-one million, eight hundred ninety-four thousand, seven hundred".