51958250 has 16 divisors (see below), whose sum is σ = 97266312. Its totient is φ = 20783200.

The previous prime is 51958223. The next prime is 51958259. The reversal of 51958250 is 5285915.

51958250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 17230801 + 34727449 = 4151^2 + 5893^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51958250.

It is not an unprimeable number, because it can be changed into a prime (51958259) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 103667 + ... + 104166.

Almost surely, 2^51958250 is an apocalyptic number.

51958250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51958250 is a deficient number, since it is larger than the sum of its proper divisors (45308062).

51958250 is a wasteful number, since it uses less digits than its factorization.

51958250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207850 (or 207840 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 35.

The square root of 51958250 is about 7208.2071279896. The cubic root of 51958250 is about 373.1511964096.

The spelling of 51958250 in words is "fifty-one million, nine hundred fifty-eight thousand, two hundred fifty".