51448429 has 12 divisors (see below), whose sum is σ = 53280444. Its totient is φ = 49667904.

The previous prime is 51448417. The next prime is 51448433. The reversal of 51448429 is 92484415.

It can be written as a sum of positive squares in 2 ways, for example, as 21996100 + 29452329 = 4690^2 + 5427^2 .

It is not a de Polignac number, because 51448429 - 2⁷ = 51448301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51448469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 327619 + ... + 327775.

It is an arithmetic number, because the mean of its divisors is an integer number (4440037).

Almost surely, 2^51448429 is an apocalyptic number.

It is an amenable number.

51448429 is a deficient number, since it is larger than the sum of its proper divisors (1832015).

51448429 is an equidigital number, since it uses as much as digits as its factorization.

51448429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364 (or 297 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The square root of 51448429 is about 7172.7560254061. The cubic root of 51448429 is about 371.9267136048.

The spelling of 51448429 in words is "fifty-one million, four hundred forty-eight thousand, four hundred twenty-nine".