51106250 has 96 divisors (see below), whose sum is σ = 112211568. Its totient is φ = 17280000.

The previous prime is 51106243. The next prime is 51106261. The reversal of 51106250 is 5260115.

51106250 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 24 ways, for example, as 34304449 + 16801801 = 5857^2 + 4099^2 .

It is a super-2 number, since 2×51106250² = 5223697578125000, which contains 22 as substring.

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, 1381232 + ... + 1381268.

Almost surely, 2^51106250 is an apocalyptic number.

51106250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51106250 is an abundant number, since it is smaller than the sum of its proper divisors (61105318).

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

51106250 is a wasteful number, since it uses less digits than its factorization.

51106250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 51106250 is about 7148.8635460470. The cubic root of 51106250 is about 371.1003281382.

Adding to 51106250 its reverse (5260115), we get a palindrome (56366365).

The spelling of 51106250 in words is "fifty-one million, one hundred six thousand, two hundred fifty".