51068000 has 96 divisors (see below), whose sum is σ = 133031808. Its totient is φ = 19200000.

The previous prime is 51067979. The next prime is 51068009. The reversal of 51068000 is 86015.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51068009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67625 + ... + 68375.

It is an arithmetic number, because the mean of its divisors is an integer number (1385748).

Almost surely, 2^51068000 is an apocalyptic number.

51068000 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 51068000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66515904).

51068000 is an abundant number, since it is smaller than the sum of its proper divisors (81963808).

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

51068000 is a wasteful number, since it uses less digits than its factorization.

51068000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793 (or 775 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 51068000 is about 7146.1877949016. The cubic root of 51068000 is about 371.0077228288.

The spelling of 51068000 in words is "fifty-one million, sixty-eight thousand".