51401449 has 8 divisors (see below), whose sum is σ = 57025440. Its totient is φ = 45936000.

The previous prime is 51401447. The next prime is 51401459. The reversal of 51401449 is 94410415.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51401449 - 2¹ = 51401447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51401443) 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 7 ways as a sum of consecutive naturals, for example, 38952 + ... + 40249.

It is an arithmetic number, because the mean of its divisors is an integer number (7128180).

Almost surely, 2^51401449 is an apocalyptic number.

51401449 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

It is an amenable number.

51401449 is a deficient number, since it is larger than the sum of its proper divisors (5623991).

51401449 is a wasteful number, since it uses less digits than its factorization.

51401449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79271.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 51401449 is about 7169.4803856347. The cubic root of 51401449 is about 371.8134711563.

The spelling of 51401449 in words is "fifty-one million, four hundred one thousand, four hundred forty-nine".