51260000 has 120 divisors (see below), whose sum is σ = 138162024. Its totient is φ = 18560000.

The previous prime is 51259969. The next prime is 51260017. The reversal of 51260000 is 6215.

It is a congruent number.

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, 219884 + ... + 220116.

Almost surely, 2^51260000 is an apocalyptic number.

51260000 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 51260000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69081012).

51260000 is an abundant number, since it is smaller than the sum of its proper divisors (86902024).

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

51260000 is a wasteful number, since it uses less digits than its factorization.

51260000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 51260000 is about 7159.6089278675. The cubic root of 51260000 is about 371.4720997169.

Adding to 51260000 its reverse (6215), we get a palindrome (51266215).

The spelling of 51260000 in words is "fifty-one million, two hundred sixty thousand".