51222300 has 36 divisors (see below), whose sum is σ = 148204056. Its totient is φ = 13659200.

The previous prime is 51222299. The next prime is 51222317. The reversal of 51222300 is 322215.

51222300 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 (15).

It is a self number, because there is not a number n which added to its sum of digits gives 51222300.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 85071 + ... + 85670.

Almost surely, 2^51222300 is an apocalyptic number.

51222300 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51222300 is an abundant number, since it is smaller than the sum of its proper divisors (96981756).

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

51222300 is a wasteful number, since it uses less digits than its factorization.

51222300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170758 (or 170751 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 51222300 is about 7156.9756182343. The cubic root of 51222300 is about 371.3810089844.

Adding to 51222300 its reverse (322215), we get a palindrome (51544515).

The spelling of 51222300 in words is "fifty-one million, two hundred twenty-two thousand, three hundred".