51451338 has 16 divisors (see below), whose sum is σ = 103130496. Its totient is φ = 17112480.

The previous prime is 51451327. The next prime is 51451369. The reversal of 51451338 is 83315415.

It is an unprimeable number.

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, 6483 + ... + 12038.

It is an arithmetic number, because the mean of its divisors is an integer number (6445656).

Almost surely, 2^51451338 is an apocalyptic number.

51451338 is an abundant number, since it is smaller than the sum of its proper divisors (51679158).

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

51451338 is a wasteful number, since it uses less digits than its factorization.

51451338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18989.

The product of its digits is 7200, while the sum is 30.

The square root of 51451338 is about 7172.9588037295. The cubic root of 51451338 is about 371.9337233065.

The spelling of 51451338 in words is "fifty-one million, four hundred fifty-one thousand, three hundred thirty-eight".