51359250 has 96 divisors (see below), whose sum is σ = 135203328. Its totient is φ = 12972000.

The previous prime is 51359237. The next prime is 51359267. The reversal of 51359250 is 5295315.

51359250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1092727 + ... + 1092773.

It is an arithmetic number, because the mean of its divisors is an integer number (1408368).

Almost surely, 2^51359250 is an apocalyptic number.

51359250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 51359250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67601664).

51359250 is an abundant number, since it is smaller than the sum of its proper divisors (83844078).

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

51359250 is a wasteful number, since it uses less digits than its factorization.

51359250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 30.

The square root of 51359250 is about 7166.5368205291. The cubic root of 51359250 is about 371.7116941789.

The spelling of 51359250 in words is "fifty-one million, three hundred fifty-nine thousand, two hundred fifty".