51331450 has 24 divisors (see below), whose sum is σ = 98771580. Its totient is φ = 19824000.

The previous prime is 51331429. The next prime is 51331459. The reversal of 51331450 is 5413315.

It is a happy number.

51331450 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 6 ways, for example, as 11553201 + 39778249 = 3399^2 + 6307^2 .

It is not an unprimeable number, because it can be changed into a prime (51331459) 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 11 ways as a sum of consecutive naturals, for example, 16251 + ... + 19150.

Almost surely, 2^51331450 is an apocalyptic number.

51331450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51331450 is a deficient number, since it is larger than the sum of its proper divisors (47440130).

51331450 is a wasteful number, since it uses less digits than its factorization.

51331450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35442 (or 35437 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 51331450 is about 7164.5969879680. The cubic root of 51331450 is about 371.6446147328.

Adding to 51331450 its reverse (5413315), we get a palindrome (56744765).

The spelling of 51331450 in words is "fifty-one million, three hundred thirty-one thousand, four hundred fifty".