51045398 has 4 divisors (see below), whose sum is σ = 76568100. Its totient is φ = 25522698.

The previous prime is 51045383. The next prime is 51045497. The reversal of 51045398 is 89354015.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 12761348 + ... + 12761351.

It is an arithmetic number, because the mean of its divisors is an integer number (19142025).

Almost surely, 2^51045398 is an apocalyptic number.

51045398 is a deficient number, since it is larger than the sum of its proper divisors (25522702).

51045398 is a wasteful number, since it uses less digits than its factorization.

51045398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25522701.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 51045398 is about 7144.6062172803. The cubic root of 51045398 is about 370.9529804333.

The spelling of 51045398 in words is "fifty-one million, forty-five thousand, three hundred ninety-eight".