51960000 has 140 divisors (see below), whose sum is σ = 172188632. Its totient is φ = 13824000.

The previous prime is 51959989. The next prime is 51960023. The reversal of 51960000 is 6915.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 119784 + ... + 120216.

Almost surely, 2^51960000 is an apocalyptic number.

51960000 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 51960000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86094316).

51960000 is an abundant number, since it is smaller than the sum of its proper divisors (120228632).

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

51960000 is an equidigital number, since it uses as much as digits as its factorization.

51960000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 51960000 is about 7208.3285163760. The cubic root of 51960000 is about 373.1553857171.

Adding to 51960000 its reverse (6915), we get a palindrome (51966915).

The spelling of 51960000 in words is "fifty-one million, nine hundred sixty thousand".