51070250 has 96 divisors (see below), whose sum is σ = 121642560. Its totient is φ = 15876000.

The previous prime is 51070231. The next prime is 51070259. The reversal of 51070250 is 5207015.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51070259) 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 47 ways as a sum of consecutive naturals, for example, 134561 + ... + 134939.

It is an arithmetic number, because the mean of its divisors is an integer number (1267110).

Almost surely, 2^51070250 is an apocalyptic number.

51070250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51070250 is an abundant number, since it is smaller than the sum of its proper divisors (70572310).

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

51070250 is a wasteful number, since it uses less digits than its factorization.

51070250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 51070250 is about 7146.3452197609. The cubic root of 51070250 is about 371.0131714797.

Adding to 51070250 its reverse (5207015), we get a palindrome (56277265).

The spelling of 51070250 in words is "fifty-one million, seventy thousand, two hundred fifty".