51126450 has 96 divisors (see below), whose sum is σ = 132580800. Its totient is φ = 13029120.

The previous prime is 51126433. The next prime is 51126451. The reversal of 51126450 is 5462115.

It is a super-2 number, since 2×51126450² = 5227827779205000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51126450.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51126451) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 468996 + ... + 469104.

It is an arithmetic number, because the mean of its divisors is an integer number (1381050).

Almost surely, 2^51126450 is an apocalyptic number.

51126450 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 51126450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66290400).

51126450 is an abundant number, since it is smaller than the sum of its proper divisors (81454350).

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

51126450 is a wasteful number, since it uses less digits than its factorization.

51126450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 231 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 51126450 is about 7150.2762184408. The cubic root of 51126450 is about 371.1492147826.

Adding to 51126450 its reverse (5462115), we get a palindrome (56588565).

The spelling of 51126450 in words is "fifty-one million, one hundred twenty-six thousand, four hundred fifty".