51442004450 has 48 divisors (see below), whose sum is σ = 96815220840. Its totient is φ = 20333406720.

The previous prime is 51442004443. The next prime is 51442004473. The reversal of 51442004450 is 5440024415.

It can be written as a sum of positive squares in 12 ways, for example, as 5553081361 + 45888923089 = 74519^2 + 214217^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12444584 + ... + 12448716.

Almost surely, 2^51442004450 is an apocalyptic number.

51442004450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51442004450 is a deficient number, since it is larger than the sum of its proper divisors (45373216390).

51442004450 is a wasteful number, since it uses less digits than its factorization.

51442004450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7031 (or 7026 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

Adding to 51442004450 its reverse (5440024415), we get a palindrome (56882028865).

It can be divided in two parts, 5144200 and 4450, that multiplied together give a square (22891690000 = 151300²).

The spelling of 51442004450 in words is "fifty-one billion, four hundred forty-two million, four thousand, four hundred fifty".