51330842 has 4 divisors (see below), whose sum is σ = 76996266. Its totient is φ = 25665420.

The previous prime is 51330821. The next prime is 51330847. The reversal of 51330842 is 24803315.

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

It can be written as a sum of positive squares in only one way, i.e., 50140561 + 1190281 = 7081^2 + 1091^2 .

It is not an unprimeable number, because it can be changed into a prime (51330847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12832709 + ... + 12832712.

Almost surely, 2^51330842 is an apocalyptic number.

51330842 is a deficient number, since it is larger than the sum of its proper divisors (25665424).

51330842 is a wasteful number, since it uses less digits than its factorization.

51330842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25665423.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 51330842 is about 7164.5545569840. The cubic root of 51330842 is about 371.6431474009.

The spelling of 51330842 in words is "fifty-one million, three hundred thirty thousand, eight hundred forty-two".